56911986660 has 24 divisors (see below), whose sum is σ = 159353562816. Its totient is φ = 15176529760.

The previous prime is 56911986643. The next prime is 56911986673. The reversal of 56911986660 is 6668911965.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 56911986660.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474266496 + ... + 474266615.

It is an arithmetic number, because the mean of its divisors is an integer number (6639731784).

Almost surely, 2^56911986660 is an apocalyptic number.

It is an amenable number.

56911986660 is an abundant number, since it is smaller than the sum of its proper divisors (102441576156).

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

56911986660 is a wasteful number, since it uses less digits than its factorization.

56911986660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948533123 (or 948533121 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 56911986660 in words is "fifty-six billion, nine hundred eleven million, nine hundred eighty-six thousand, six hundred sixty".