12631605312 has 56 divisors (see below), whose sum is σ = 33444180000. Its totient is φ = 4207630336.

The previous prime is 12631605271. The next prime is 12631605331. The reversal of 12631605312 is 21350613621.

It is a self number, because there is not a number n which added to its sum of digits gives 12631605312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265864 + ... + 309752.

It is an arithmetic number, because the mean of its divisors is an integer number (597217500).

Almost surely, 2^12631605312 is an apocalyptic number.

12631605312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12631605312 is an abundant number, since it is smaller than the sum of its proper divisors (20812574688).

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

12631605312 is a wasteful number, since it uses less digits than its factorization.

12631605312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45403 (or 45393 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 12631605312 in words is "twelve billion, six hundred thirty-one million, six hundred five thousand, three hundred twelve".