56816761671 has 6 divisors (see below), whose sum is σ = 82068655760. Its totient is φ = 37877841108.

The previous prime is 56816761657. The next prime is 56816761679. The reversal of 56816761671 is 17616761865.

56816761671 is a `hidden beast` number, since 5 + 6 + 8 + 16 + 7 + 616 + 7 + 1 = 666.

It is not a de Polignac number, because 56816761671 - 2⁶ = 56816761607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56816761679) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3156486751 + ... + 3156486768.

Almost surely, 2^56816761671 is an apocalyptic number.

56816761671 is a deficient number, since it is larger than the sum of its proper divisors (25251894089).

56816761671 is a wasteful number, since it uses less digits than its factorization.

56816761671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312973525 (or 6312973522 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 56816761671 in words is "fifty-six billion, eight hundred sixteen million, seven hundred sixty-one thousand, six hundred seventy-one".