Googol

Googol is a large number, equal to $$10^{100}$$ or 1 followed by 100 zeroes. It was coined by Edward Kasner's nine-year-old nephew, Milton Sirotta. The name appears to have no particular meaning.

There are not enough particles in the known universe to match a googol, although the number itself is dwarfed by many other more massive numbers.

The googol's prime factorization is $$2^{100} \times 5^{100}$$. Therefore, the googol has $$101 \times 101 = 10201$$ factors and their product is $$10^{1020100/2} = 10^{510050}$$.