56631717605 has 16 divisors (see below), whose sum is σ = 69839497728. Its totient is φ = 44058192000.

The previous prime is 56631717601. The next prime is 56631717607. The reversal of 56631717605 is 50671713665.

It is not a de Polignac number, because 56631717605 - 2² = 56631717601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56631717605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56631717601) 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, 380381 + ... + 507890.

It is an arithmetic number, because the mean of its divisors is an integer number (4364968608).

Almost surely, 2^56631717605 is an apocalyptic number.

It is an amenable number.

56631717605 is a deficient number, since it is larger than the sum of its proper divisors (13207780123).

56631717605 is a wasteful number, since it uses less digits than its factorization.

56631717605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888628.

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 56631717605 in words is "fifty-six billion, six hundred thirty-one million, seven hundred seventeen thousand, six hundred five".