13375979631 has 80 divisors (see below), whose sum is σ = 23546909760. Its totient is φ = 7407106560.

The previous prime is 13375979579. The next prime is 13375979641. The reversal of 13375979631 is 13697957331.

13375979631 is a `hidden beast` number, since 13 + 3 + 7 + 597 + 9 + 6 + 31 = 666.

It is not a de Polignac number, because 13375979631 - 2¹⁴ = 13375963247 is a prime.

It is a super-2 number, since 2×13375979631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13375979641) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5893965 + ... + 5896233.

It is an arithmetic number, because the mean of its divisors is an integer number (294336372).

Almost surely, 2^13375979631 is an apocalyptic number.

13375979631 is a deficient number, since it is larger than the sum of its proper divisors (10170930129).

13375979631 is a wasteful number, since it uses less digits than its factorization.

13375979631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606 (or 2597 counting only the distinct ones).

The product of its digits is 3214890, while the sum is 54.

The spelling of 13375979631 in words is "thirteen billion, three hundred seventy-five million, nine hundred seventy-nine thousand, six hundred thirty-one".