56681313723 has 12 divisors (see below), whose sum is σ = 82375299240. Its totient is φ = 37555716096.

The previous prime is 56681313721. The next prime is 56681313727. The reversal of 56681313723 is 32731318665.

56681313723 is a `hidden beast` number, since 566 + 8 + 1 + 3 + 13 + 72 + 3 = 666.

It is not a de Polignac number, because 56681313723 - 2¹ = 56681313721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56681313721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19317318 + ... + 19320251.

It is an arithmetic number, because the mean of its divisors is an integer number (6864608270).

Almost surely, 2^56681313723 is an apocalyptic number.

56681313723 is a deficient number, since it is larger than the sum of its proper divisors (25693985517).

56681313723 is a wasteful number, since it uses less digits than its factorization.

56681313723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38637738 (or 38637735 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 56681313723 in words is "fifty-six billion, six hundred eighty-one million, three hundred thirteen thousand, seven hundred twenty-three".