56637655431 has 12 divisors (see below), whose sum is σ = 87846159672. Its totient is φ = 32364374448.

The previous prime is 56637655421. The next prime is 56637655441. The reversal of 56637655431 is 13455673665.

It is an interprime number because it is at equal distance from previous prime (56637655421) and next prime (56637655441).

It is not a de Polignac number, because 56637655431 - 2⁷ = 56637655303 is a prime.

It is a super-2 number, since 2×56637655431² (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 (56637655421) 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, 192644940 + ... + 192645233.

It is an arithmetic number, because the mean of its divisors is an integer number (7320513306).

Almost surely, 2^56637655431 is an apocalyptic number.

56637655431 is a deficient number, since it is larger than the sum of its proper divisors (31208504241).

56637655431 is a wasteful number, since it uses less digits than its factorization.

56637655431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385290190 (or 385290183 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 51.

The spelling of 56637655431 in words is "fifty-six billion, six hundred thirty-seven million, six hundred fifty-five thousand, four hundred thirty-one".