56817634861 has 64 divisors (see below), whose sum is σ = 66213554176. Its totient is φ = 48372940800.

The previous prime is 56817634859. The next prime is 56817634879. The reversal of 56817634861 is 16843671865.

56817634861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 8-Lehmer number, since φ(56817634861) divides (56817634861-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 56817634861 - 2¹ = 56817634859 is a prime.

It is the 238365-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56817634801) by changing a digit.

It is a nontrivial repunit in base 238364.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 235757701 + ... + 235757941.

It is an arithmetic number, because the mean of its divisors is an integer number (1034586784).

Almost surely, 2^56817634861 is an apocalyptic number.

It is an amenable number.

56817634861 is a deficient number, since it is larger than the sum of its proper divisors (9395919315).

56817634861 is a wasteful number, since it uses less digits than its factorization.

56817634861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582.

The product of its digits is 5806080, while the sum is 55.

The spelling of 56817634861 in words is "fifty-six billion, eight hundred seventeen million, six hundred thirty-four thousand, eight hundred sixty-one".