13687324065 has 24 divisors (see below), whose sum is σ = 23775972480. Its totient is φ = 7284128544.

The previous prime is 13687324051. The next prime is 13687324069. The reversal of 13687324065 is 56042378631.

13687324065 is a `hidden beast` number, since 136 + 87 + 32 + 406 + 5 = 666.

It is not a de Polignac number, because 13687324065 - 2¹⁵ = 13687291297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13687324065.

It is not an unprimeable number, because it can be changed into a prime (13687324069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307635 + ... + 349304.

It is an arithmetic number, because the mean of its divisors is an integer number (990665520).

Almost surely, 2^13687324065 is an apocalyptic number.

13687324065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13687324065 is a deficient number, since it is larger than the sum of its proper divisors (10088648415).

13687324065 is a wasteful number, since it uses less digits than its factorization.

13687324065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657413 (or 657410 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 13687324065 in words is "thirteen billion, six hundred eighty-seven million, three hundred twenty-four thousand, sixty-five".