188978346560 has 56 divisors (see below), whose sum is σ = 462167005560. Its totient is φ = 73548324864.

The previous prime is 188978346521. The next prime is 188978346577. The reversal of 188978346560 is 65643879881.

It can be written as a sum of positive squares in 4 ways, for example, as 82148731456 + 106829615104 = 286616^2 + 326848^2 .

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, 7968665 + ... + 7992344.

Almost surely, 2^188978346560 is an apocalyptic number.

188978346560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188978346560 is an abundant number, since it is smaller than the sum of its proper divisors (273188659000).

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

188978346560 is a wasteful number, since it uses less digits than its factorization.

188978346560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15961063 (or 15961053 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 65.

The spelling of 188978346560 in words is "one hundred eighty-eight billion, nine hundred seventy-eight million, three hundred forty-six thousand, five hundred sixty".