20502198704 has 20 divisors (see below), whose sum is σ = 42778626576. Its totient is φ = 9462553152.

The previous prime is 20502198617. The next prime is 20502198751. The reversal of 20502198704 is 40789120502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49283924 + ... + 49284339.

Almost surely, 2^20502198704 is an apocalyptic number.

It is an amenable number.

20502198704 is an abundant number, since it is smaller than the sum of its proper divisors (22276427872).

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

20502198704 is a wasteful number, since it uses less digits than its factorization.

20502198704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98568284 (or 98568278 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 20502198704 in words is "twenty billion, five hundred two million, one hundred ninety-eight thousand, seven hundred four".