Terasecond and longer

A terasecond (symbol: Ts) is one trillion seconds. That is about 31,700 years. It can be written as 1012 seconds.
Here is a list of time spans longer than 1 terasecond:
1015 seconds = 1 petasecond = 31.7 million years
1018 seconds = 1 exasecond = 31.7 billion years
1021 seconds = 1 zettasecond = 31.7 trillion years
1024 seconds = 1 yottasecond = 31.7 quadrillion years
1027 seconds = 1 ronnasecond = 31.7 quintillion years
1030 seconds = 1 quettasecond = 31.7 sextillion years
Teraseconds
Here are some examples of events that take this long:
75,000 years -- time since the ancestors of the Indigenous Australians reached Australia
76,000 years -- half-life of nickel-59
154,000 years -- half-life of neptunium-236
159,200 years -- half-life of uranium-233
200,000 years -- age of Homo sapiens
211,100 years -- half-life of technetium-99
250,000 years -- age of Homo neanderthalensis
301,000 years -- half-life of chlorine-36
340,000 years -- half-life of curium-248
379,000 years -- time after the Big Bang until cosmic microwave background radiation began
~700,000 years -- time since the earth's magnetic field last changed
1,000,000 years -- the lifespan of a blue supergiant star
1,530,000 years -- half-life of zirconium-93
2,600,000 years -- amount of time the Paleolithic era lasted
2,600,000 years -- half-life of technetium-97
3.74 million years -- half-life of manganese-53
4 million years -- time since the last ice age
4.2 million years -- half-life of technetium-98
6.5 million years -- half-life of palladium-107
15.6 million years -- half-life of curium-247
20 million years -- time since the first forms of grass appeared
23.42 million years -- half-life of uranium-236
26 million years -- time since the first elephants were born
Petaseconds
34 million years -- time since the evolution of the cat
34.7 million years -- half-life of niobium-92
49 million years -- time since the whales returned to the water
60 million years -- time since the evolution of the first primates.
135 million years -- time since end of Jurassic and beginning of Cretaceous period
250 million years -- Galactic year - an orbit around the center of the Milky way of our Sun and the Solar system
251.4 million years -- time since the Permian mass extinction
280 million years -- time since end of Carboniferous and beginning of Permian Period.
390 million years - first fishapods
575 million years - age of the oldest animal fossils
580 million years - time since the end of a possible Snowball Earth ice age
703.8 million years - half-life of uranium-235
750 million years - time since the beginning of a possible ice age
1277 million years - half-life of potassium-40
1.8-2.1 billion years - age of the earliest eukaryotes
2.3 billion years - time since the first known ice age
3.5 to 3.8 billion years - age of oldest records of life: stromatolites and cyanobacteria
4.468 billion years - half-life of uranium-238
4.5 billion years - age of the Earth
13.7 +- 0.2 billion years (4e17 seconds) - age of the universe according to the Big Bang theory
20 billion years - time until the end of the universe in the Big Rip scenario
Exaseconds
100 billion (1011) years -- If the universe is closed, the lifetime of the universe
Some radioisotopes have very long half-lives:
(1.4 +- 0.4) x 1017 years - vanadium-50
(1.9 +- 0.2) x 1019 years - bismuth-209
(3.1 +- 0.4) x 1019 years - cadmium-116
(2.2 +- 0.3) x 1024 years - tellurium-128
Orders of magnitude
Units of time