56613213856 has 24 divisors (see below), whose sum is σ = 111507769044. Its totient is φ = 28293780480.

The previous prime is 56613213829. The next prime is 56613213871. The reversal of 56613213856 is 65831231665.

It can be written as a sum of positive squares in 2 ways, for example, as 54634387600 + 1978826256 = 233740^2 + 44484^2 .

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, 328905 + ... + 470536.

Almost surely, 2^56613213856 is an apocalyptic number.

It is an amenable number.

56613213856 is a deficient number, since it is larger than the sum of its proper divisors (54894555188).

56613213856 is a wasteful number, since it uses less digits than its factorization.

56613213856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801664 (or 801656 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The spelling of 56613213856 in words is "fifty-six billion, six hundred thirteen million, two hundred thirteen thousand, eight hundred fifty-six".