12631640455368 has 128 divisors (see below), whose sum is σ = 38380322217600. Its totient is φ = 3817507449600.

The previous prime is 12631640455309. The next prime is 12631640455373. The reversal of 12631640455368 is 86355404613621.

12631640455368 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 1 + 64 + 0 + 45 + 536 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6240223 + ... + 8012718.

It is an arithmetic number, because the mean of its divisors is an integer number (299846267325).

Almost surely, 2^{12631640455368} is an apocalyptic number.

12631640455368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12631640455368 is an abundant number, since it is smaller than the sum of its proper divisors (25748681762232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12631640455368 is a wasteful number, since it uses less digits than its factorization.

12631640455368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14253340 (or 14253330 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 12631640455368 in words is "twelve trillion, six hundred thirty-one billion, six hundred forty million, four hundred fifty-five thousand, three hundred sixty-eight".