13187666252 has 12 divisors (see below), whose sum is σ = 23148141576. Its totient is φ = 6573911520.

The previous prime is 13187666231. The next prime is 13187666269. The reversal of 13187666252 is 25266678131.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13187666197 and 13187666206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4978913 + ... + 4981560.

It is an arithmetic number, because the mean of its divisors is an integer number (1929011798).

Almost surely, 2^13187666252 is an apocalyptic number.

It is an amenable number.

13187666252 is a deficient number, since it is larger than the sum of its proper divisors (9960475324).

13187666252 is a wasteful number, since it uses less digits than its factorization.

13187666252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9960808 (or 9960806 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The spelling of 13187666252 in words is "thirteen billion, one hundred eighty-seven million, six hundred sixty-six thousand, two hundred fifty-two".