20956232804 has 12 divisors (see below), whose sum is σ = 39494438844. Its totient is φ = 9672107424.

The previous prime is 20956232783. The next prime is 20956232831. The reversal of 20956232804 is 40823265902.

It can be written as a sum of positive squares in 2 ways, for example, as 5155240000 + 15800992804 = 71800^2 + 125702^2 .

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, 201502187 + ... + 201502290.

It is an arithmetic number, because the mean of its divisors is an integer number (3291203237).

Almost surely, 2^20956232804 is an apocalyptic number.

It is an amenable number.

20956232804 is a deficient number, since it is larger than the sum of its proper divisors (18538206040).

20956232804 is a wasteful number, since it uses less digits than its factorization.

20956232804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403004494 (or 403004492 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 20956232804 in words is "twenty billion, nine hundred fifty-six million, two hundred thirty-two thousand, eight hundred four".