13187249964 has 36 divisors (see below), whose sum is σ = 38096500624. Its totient is φ = 3767785632.

The previous prime is 13187249941. The next prime is 13187249981. The reversal of 13187249964 is 46994278131.

13187249964 is a `hidden beast` number, since 13 + 1 + 87 + 2 + 499 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×13187249964² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13187249964.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26164927 + ... + 26165430.

Almost surely, 2^13187249964 is an apocalyptic number.

13187249964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13187249964 is an abundant number, since it is smaller than the sum of its proper divisors (24909250660).

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

13187249964 is a wasteful number, since it uses less digits than its factorization.

13187249964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52330374 (or 52330369 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 13187249964 in words is "thirteen billion, one hundred eighty-seven million, two hundred forty-nine thousand, nine hundred sixty-four".