52791317631 has 24 divisors (see below), whose sum is σ = 82153431360. Its totient is φ = 32473670976.

The previous prime is 52791317629. The next prime is 52791317687. The reversal of 52791317631 is 13671319725.

52791317631 is a `hidden beast` number, since 5 + 2 + 7 + 9 + 1 + 3 + 1 + 7 + 631 = 666.

It is not a de Polignac number, because 52791317631 - 2¹ = 52791317629 is a prime.

It is a super-2 number, since 2×52791317631² (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 (52791317531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198730 + ... + 380888.

It is an arithmetic number, because the mean of its divisors is an integer number (3423059640).

Almost surely, 2^52791317631 is an apocalyptic number.

52791317631 is a deficient number, since it is larger than the sum of its proper divisors (29362113729).

52791317631 is a wasteful number, since it uses less digits than its factorization.

52791317631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184655 (or 184652 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The spelling of 52791317631 in words is "fifty-two billion, seven hundred ninety-one million, three hundred seventeen thousand, six hundred thirty-one".