56979528431 has 12 divisors (see below), whose sum is σ = 69770852280. Its totient is φ = 46269090000.

The previous prime is 56979528413. The next prime is 56979528433. The reversal of 56979528431 is 13482597965.

It is a happy number.

It is not a de Polignac number, because 56979528431 - 2²⁶ = 56912419567 is a prime.

It is a super-2 number, since 2×56979528431² (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 (56979528433) 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, 30600320 + ... + 30602181.

It is an arithmetic number, because the mean of its divisors is an integer number (5814237690).

Almost surely, 2^56979528431 is an apocalyptic number.

56979528431 is a deficient number, since it is larger than the sum of its proper divisors (12791323849).

56979528431 is a wasteful number, since it uses less digits than its factorization.

56979528431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61202534 (or 61202527 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 59.

The spelling of 56979528431 in words is "fifty-six billion, nine hundred seventy-nine million, five hundred twenty-eight thousand, four hundred thirty-one".