20335900816 has 135 divisors (see below), whose sum is σ = 50488118163. Its totient is φ = 7905965760.

The previous prime is 20335900801. The next prime is 20335900829. The reversal of 20335900816 is 61800953302.

The square root of 20335900816 is 142604.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 43921801 + ... + 43922263.

Almost surely, 2^20335900816 is an apocalyptic number.

20335900816 is the 142604-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20335900816

20335900816 is an abundant number, since it is smaller than the sum of its proper divisors (30152217347).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20335900816 is an equidigital number, since it uses as much as digits as its factorization.

20335900816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 20335900816 in words is "twenty billion, three hundred thirty-five million, nine hundred thousand, eight hundred sixteen".