13136172687 has 24 divisors (see below), whose sum is σ = 20713724928. Its totient is φ = 7955816400.

The previous prime is 13136172667. The next prime is 13136172713. The reversal of 13136172687 is 78627163131.

13136172687 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 617 + 26 + 8 + 7 = 666.

It is not a de Polignac number, because 13136172687 - 2²⁶ = 13069063823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13136172617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100528 + ... + 190730.

It is an arithmetic number, because the mean of its divisors is an integer number (863071872).

Almost surely, 2^13136172687 is an apocalyptic number.

13136172687 is a deficient number, since it is larger than the sum of its proper divisors (7577552241).

13136172687 is a wasteful number, since it uses less digits than its factorization.

13136172687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91691 (or 91688 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The spelling of 13136172687 in words is "thirteen billion, one hundred thirty-six million, one hundred seventy-two thousand, six hundred eighty-seven".