13251918568 has 32 divisors (see below), whose sum is σ = 28407859200. Its totient is φ = 5677215552.

The previous prime is 13251918553. The next prime is 13251918577. The reversal of 13251918568 is 86581915231.

It is a super-2 number, since 2×13251918568² (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 7 ways as a sum of consecutive naturals, for example, 106438 + ... + 194506.

It is an arithmetic number, because the mean of its divisors is an integer number (887745600).

Almost surely, 2^13251918568 is an apocalyptic number.

It is an amenable number.

13251918568 is an abundant number, since it is smaller than the sum of its proper divisors (15155940632).

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

13251918568 is a wasteful number, since it uses less digits than its factorization.

13251918568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90769 (or 90765 counting only the distinct ones).

The product of its digits is 518400, while the sum is 49.

The spelling of 13251918568 in words is "thirteen billion, two hundred fifty-one million, nine hundred eighteen thousand, five hundred sixty-eight".