56638477976 has 16 divisors (see below), whose sum is σ = 107171433600. Its totient is φ = 28059429024.

The previous prime is 56638477957. The next prime is 56638477981. The reversal of 56638477976 is 67977483665.

It is a congruent number.

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, 32475320 + ... + 32477063.

It is an arithmetic number, because the mean of its divisors is an integer number (6698214600).

Almost surely, 2^56638477976 is an apocalyptic number.

It is an amenable number.

56638477976 is a deficient number, since it is larger than the sum of its proper divisors (50532955624).

56638477976 is a wasteful number, since it uses less digits than its factorization.

56638477976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64952498 (or 64952494 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 68.

The spelling of 56638477976 in words is "fifty-six billion, six hundred thirty-eight million, four hundred seventy-seven thousand, nine hundred seventy-six".