12631392369 has 16 divisors (see below), whose sum is σ = 18731543040. Its totient is φ = 8412662160.

The previous prime is 12631392359. The next prime is 12631392419. The reversal of 12631392369 is 96329313621.

12631392369 is a `hidden beast` number, since 1 + 2 + 631 + 3 + 9 + 2 + 3 + 6 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-12631392369 is a prime.

It is a super-2 number, since 2×12631392369² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12631392359) 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, 201537 + ... + 256670.

It is an arithmetic number, because the mean of its divisors is an integer number (1170721440).

Almost surely, 2^12631392369 is an apocalyptic number.

It is an amenable number.

12631392369 is a deficient number, since it is larger than the sum of its proper divisors (6100150671).

12631392369 is a wasteful number, since it uses less digits than its factorization.

12631392369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459237 (or 459231 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The spelling of 12631392369 in words is "twelve billion, six hundred thirty-one million, three hundred ninety-two thousand, three hundred sixty-nine".