56793778664 has 32 divisors (see below), whose sum is σ = 123368099520. Its totient is φ = 24006761856.

The previous prime is 56793778651. The next prime is 56793778729. The reversal of 56793778664 is 46687739765.

It is a junction number, because it is equal to n+sod(n) for n = 56793778594 and 56793778603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6942314 + ... + 6950489.

It is an arithmetic number, because the mean of its divisors is an integer number (3855253110).

Almost surely, 2^56793778664 is an apocalyptic number.

It is an amenable number.

56793778664 is an abundant number, since it is smaller than the sum of its proper divisors (66574320856).

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

56793778664 is a wasteful number, since it uses less digits than its factorization.

56793778664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13892889 (or 13892885 counting only the distinct ones).

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

The spelling of 56793778664 in words is "fifty-six billion, seven hundred ninety-three million, seven hundred seventy-eight thousand, six hundred sixty-four".