13021563312 has 30 divisors (see below), whose sum is σ = 36442292172. Its totient is φ = 4340521056.

The previous prime is 13021563307. The next prime is 13021563329. The reversal of 13021563312 is 21336512031.

13021563312 is a `hidden beast` number, since 1 + 3 + 0 + 2 + 15 + 633 + 12 = 666.

It is a super-2 number, since 2×13021563312² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45213618 + ... + 45213905.

Almost surely, 2^13021563312 is an apocalyptic number.

13021563312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13021563312 is an abundant number, since it is smaller than the sum of its proper divisors (23420728860).

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

13021563312 is a wasteful number, since it uses less digits than its factorization.

13021563312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90427537 (or 90427528 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The spelling of 13021563312 in words is "thirteen billion, twenty-one million, five hundred sixty-three thousand, three hundred twelve".