13251215232 has 48 divisors (see below), whose sum is σ = 38131755480. Its totient is φ = 4417071360.

The previous prime is 13251215209. The next prime is 13251215291. The reversal of 13251215232 is 23251215231.

13251215232 is a `hidden beast` number, since 13 + 2 + 5 + 121 + 523 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 13251215196 and 13251215205.

It is a congruent number.

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, 5750244 + ... + 5752547.

Almost surely, 2^13251215232 is an apocalyptic number.

13251215232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13251215232 is an abundant number, since it is smaller than the sum of its proper divisors (24880540248).

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

13251215232 is a wasteful number, since it uses less digits than its factorization.

13251215232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11502811 (or 11502796 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

Subtracting 13251215232 from its reverse (23251215231), we obtain a palindrome (9999999999).

The spelling of 13251215232 in words is "thirteen billion, two hundred fifty-one million, two hundred fifteen thousand, two hundred thirty-two".