20513562402 has 16 divisors (see below), whose sum is σ = 41030791200. Its totient is φ = 6837243072.

The previous prime is 20513562383. The next prime is 20513562427. The reversal of 20513562402 is 20426531502.

It is a self number, because there is not a number n which added to its sum of digits gives 20513562402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77152 + ... + 216747.

It is an arithmetic number, because the mean of its divisors is an integer number (2564424450).

Almost surely, 2^20513562402 is an apocalyptic number.

20513562402 is an abundant number, since it is smaller than the sum of its proper divisors (20517228798).

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

20513562402 is a wasteful number, since it uses less digits than its factorization.

20513562402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305537.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 20513562402 in words is "twenty billion, five hundred thirteen million, five hundred sixty-two thousand, four hundred two".