One quintillion

A **quintillion** is equal to 1018 in the short scale, or 1030 in the long scale.

Written out in decimal form quintillion (in the short scale) is:

Template:Digits

In long scale:

Template:Digits

This number is also called **hexillion** in Russ Rowlett's Greek-based naming system.

Aarex Tiaokhiao calls this number **hetillion**. He also gave name **ocdoocol** and **18-noogol**, referring to the short scale value of this number.

Wikia user NumLynx gave the name **sexasand** for this number's short scale value.

Nicolas Chuquet coined **tryllion** for 1018 (not to be confused with 1032), according to the *Triparty en la science des nombres*, which was previously lost and not rediscovered until 1880.  Later it became trillion in long scale.

## Decimal

* 1,000,000,000,000,000,000 - short scale
* 1,000,000,000,000,000,000,000,000,000,000 - long scale

## Examples

* Niagara Falls takes up 210,000 years (about 30 times all recorded history) to use up a quintillion gallons of water.
* A single drop of water contains 1.7 quintillion water molecules.
* The distance from the Milky way to Andromeda is 2 million light years, which is about 11.73 quintillion miles or 18.877 quintillion kilometers.
* The entire Earth contains about 326 quintillion gallons of water.
* There are about 43.3 quintillion ways to arrange a 3×3×3 Template:W.
* The SI prefix exa- multiplies by one quintillion.
* The Earth's cross section has an area of about 1.275 quintillion square centimeters.
* By one estimate, there are 20 quintillion living animals on Earth.
* a tower of a quintillion one dollar bills would aproximately measure 1.099\*10^20m in height.
* The half-life of Bismuth-209 is approximately 20 quintillion years.

## As a banknote denomination

Only the Template:W had banknotes with this number in the denomination.

## Gallery

1 Quintillion Dollars.jpgA quintillion dollars in 100 piles of 100 dollar bills in comparison to the Empire State BuildingQuintillion2.jpgA quintillion square centimeters in comparison to the earth.
## Sources

1. ↑ Quintillion at Wolfram MathWorld
2. ↑ Names for Large Numbers
3. ↑ Aarex Tiaokhiao's illion numbersTemplate:Dead link
4. ↑ Part 1 (LAN) - Aarex GoogologyTemplate:Dead link
5. ↑ NumLynx's Large Numbers
6. ↑ Olivier Miakinen, Grands nombres : 1270-1961, sept siècles d'histoire in Écriture des nombres en français. 1 May 2004
7. ↑ Robert Munafo, Origins of the Chuquet Number Names
8. ↑ Template:Cite web/author 2.1.5 - Everyday Large Numbers for a Modern World. Retrieved 2013-06-11.
9. ↑ Notable Properties of Specific Numbers (page 18)
10. ↑ Almost Infinite
11. ↑ How Many Wild Animals Are There?

## See also

* quintyllion

Standard -illion numbers 103n+3 (106n)

Main article: -illion**1–9:** million · billion · trillion · quadr · quint · sext · sept · oct · non
**10–19:** decillion · undec · duodec · tredec · quattuordec · quindec · sexdec · septendec · octodec · novemdec
**20–29:** vigintillion · unvigint · duovigint · trevigint · quattuorvigint · quinvigint · sexvigint · septenvigint · octovigint · novemvigint
**30–39:** trigintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**40–49:** quadragintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**50–59:** quinquagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**60–69:** sexagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**70–79:** septuagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**80–89:** octogintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**90–99:** nonagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**100–900:** centillion · ducent · trecent · quadringent · quingent · sescent · septingent · octingent · nongent
**1,000–1024:** millillion · dumill · dumillinonagintanongent · trimill · trimilliduotrigintatrecent · trimillisexoctogintaoctingent · quadrimill · quadrimilliquattuordecicent · quinmill · sexmill · septimill · octimill · nonimill · myr · decimilliquinsexagintasescent · dumyr · unquadragintamilliunquinquagintacent · centimill · micr · nan · pic · femt · att · zept · yoct

fr:Quintillion