56861586431 has 8 divisors (see below), whose sum is σ = 61556162304. Its totient is φ = 52212811680.

The previous prime is 56861586407. The next prime is 56861586437. The reversal of 56861586431 is 13468516865.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56861586431 is a prime.

It is a super-2 number, since 2×56861586431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56861586437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11447696 + ... + 11452661.

It is an arithmetic number, because the mean of its divisors is an integer number (7694520288).

Almost surely, 2^56861586431 is an apocalyptic number.

56861586431 is a deficient number, since it is larger than the sum of its proper divisors (4694575873).

56861586431 is a wasteful number, since it uses less digits than its factorization.

56861586431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22900561.

The product of its digits is 4147200, while the sum is 53.

The spelling of 56861586431 in words is "fifty-six billion, eight hundred sixty-one million, five hundred eighty-six thousand, four hundred thirty-one".