56802571538 has 4 divisors (see below), whose sum is σ = 85203857310. Its totient is φ = 28401285768.

The previous prime is 56802571523. The next prime is 56802571543. The reversal of 56802571538 is 83517520865.

It is a happy number.

56802571538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54050205169 + 2752366369 = 232487^2 + 52463^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14200642883 + ... + 14200642886.

Almost surely, 2^56802571538 is an apocalyptic number.

56802571538 is a deficient number, since it is larger than the sum of its proper divisors (28401285772).

56802571538 is a wasteful number, since it uses less digits than its factorization.

56802571538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28401285771.

The product of its (nonzero) digits is 2016000, while the sum is 50.

The spelling of 56802571538 in words is "fifty-six billion, eight hundred two million, five hundred seventy-one thousand, five hundred thirty-eight".