188503852172 has 24 divisors (see below), whose sum is σ = 330226896384. Its totient is φ = 94153369232.

The previous prime is 188503852153. The next prime is 188503852193. The reversal of 188503852172 is 271258305881.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 188503852172.

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, 18073223 + ... + 18083649.

It is an arithmetic number, because the mean of its divisors is an integer number (13759454016).

Almost surely, 2^188503852172 is an apocalyptic number.

It is an amenable number.

188503852172 is a deficient number, since it is larger than the sum of its proper divisors (141723044212).

188503852172 is a wasteful number, since it uses less digits than its factorization.

188503852172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14725 (or 14723 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 50.

The spelling of 188503852172 in words is "one hundred eighty-eight billion, five hundred three million, eight hundred fifty-two thousand, one hundred seventy-two".