56656737320 has 32 divisors (see below), whose sum is σ = 127486974600. Its totient is φ = 22661038848.

The previous prime is 56656737311. The next prime is 56656737323. The reversal of 56656737320 is 2373765665.

It can be written as a sum of positive squares in 4 ways, for example, as 55476265156 + 1180472164 = 235534^2 + 34358^2 .

It is not an unprimeable number, because it can be changed into a prime (56656737323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605522 + ... + 692798.

Almost surely, 2^56656737320 is an apocalyptic number.

It is an amenable number.

56656737320 is an abundant number, since it is smaller than the sum of its proper divisors (70830237280).

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

56656737320 is a wasteful number, since it uses less digits than its factorization.

56656737320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103517 (or 103513 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 50.

The spelling of 56656737320 in words is "fifty-six billion, six hundred fifty-six million, seven hundred thirty-seven thousand, three hundred twenty".