12631502256 has 20 divisors (see below), whose sum is σ = 32631380952. Its totient is φ = 4210500736.

The previous prime is 12631502251. The next prime is 12631502287. The reversal of 12631502256 is 65220513621.

It is not an unprimeable number, because it can be changed into a prime (12631502251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131578101 + ... + 131578196.

Almost surely, 2^12631502256 is an apocalyptic number.

12631502256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12631502256 is an abundant number, since it is smaller than the sum of its proper divisors (19999878696).

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

12631502256 is a wasteful number, since it uses less digits than its factorization.

12631502256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263156308 (or 263156302 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 12631502256 in words is "twelve billion, six hundred thirty-one million, five hundred two thousand, two hundred fifty-six".