56909073431 has 16 divisors (see below), whose sum is σ = 65488808448. Its totient is φ = 48441996000.

The previous prime is 56909073413. The next prime is 56909073437. The reversal of 56909073431 is 13437090965.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56909073431 is a prime.

It is a super-2 number, since 2×56909073431² (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 (56909073437) 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, 5301836 + ... + 5312558.

It is an arithmetic number, because the mean of its divisors is an integer number (4093050528).

Almost surely, 2^56909073431 is an apocalyptic number.

56909073431 is a deficient number, since it is larger than the sum of its proper divisors (8579735017).

56909073431 is a wasteful number, since it uses less digits than its factorization.

56909073431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15902.

The product of its (nonzero) digits is 612360, while the sum is 47.

The spelling of 56909073431 in words is "fifty-six billion, nine hundred nine million, seventy-three thousand, four hundred thirty-one".