10

10 (ten) is a positive integer following 9 and preceding 11. Since humans have ten fingers, base 10 (the decimal system) is the standard numeral system.

10 is an. The prefix Deca, meaning of 10.

Many googologisms are based on the number ten. All the -illion numbers and googol and their -plex variants are powers of ten. Almost every googologism named by Jonathan Bowers and Sbiis Saibian is a power of ten.