16

16 (sixteen) is a positive integer following 15 and preceding 17. Its ordinal form is written "16th" or "sixteenth".
== Properties ==
*16 is an .
*It is the fourth and also equal to 2 to the 4th power, and since it is a power of two it is commonly associated with computing.
*16 is the number for the French department of .
*It is the only integer that can be expressed as both xy and yx where x and y are distinct integers.
*It is the 3rd superperfect number.
*2 to the 16th power is 65536, which is one less than the largest known Fermat prime.
== In googology ==
*In Greek-based naming systems, 16 is associated with prefix "hexadeka-", and with prefix "sexdeci-" in Latin systems.
*16 is expressible as 2↑↑3 in up-arrow notation, or as 24 and 42. It occurs naturally when working with powers of 2.
*It can be named "garfour" with the gar- prefix.
*In strong array notation, it is equal to s(2,3,2)
*Username5243 coined the names Binary-Gooquol and Hexadecimal-Goonol for this number, and it's equal to 2[1]4 = 16[1]1 in Username5243's Array Notation.Part 1 - My Large Numbers
*Aarex Tiaokhiao coined the name hexadecimal-uoonol for this number.Part 1 (LAN) - Aarex Googology
*16 can be called "googoij" using the googo- naming system.Pointless Gigantic List of Numbers - Part 1: The Tiny Dust Bits
*DeepLineMadom calls the number zeroogolquinplex and zeroogolquintiplex, and is equal to 10[0]10[0]10[0]10[0]10[0]10[0]100 in DeepLineMadom's Array NotationDeepLineMadom's googology - Numbers I've coined (Retrieved 4 May 2022).
=== Googological functions returning 16 ===
* Big Ass Number: \(ban(2) = 16\)
* Really Big Ass Number: \(rban(2) = 16\)
== Sources ==
Category:Numbers
Category:Class 1
Category:Numbers 0-99
Category:Numbers with 1 to 2 digits
Category:Powers of 2
Category:Gar-
Category:Googol Regiment
Category:Doogol Regiment