56919918568 has 64 divisors (see below), whose sum is σ = 113742954000. Its totient is φ = 26610941952.

The previous prime is 56919918491. The next prime is 56919918569. The reversal of 56919918568 is 86581991965.

It can be written as a sum of positive squares in 8 ways, for example, as 23962420804 + 32957497764 = 154798^2 + 181542^2 .

It is not an unprimeable number, because it can be changed into a prime (56919918569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16127428 + ... + 16130956.

Almost surely, 2^56919918568 is an apocalyptic number.

It is an amenable number.

56919918568 is a deficient number, since it is larger than the sum of its proper divisors (56823035432).

56919918568 is a wasteful number, since it uses less digits than its factorization.

56919918568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294 (or 4290 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 67.

The spelling of 56919918568 in words is "fifty-six billion, nine hundred nineteen million, nine hundred eighteen thousand, five hundred sixty-eight".