188915255968 has 24 divisors (see below), whose sum is σ = 371945577780. Its totient is φ = 94452887040.

The previous prime is 188915255911. The next prime is 188915256001. The reversal of 188915255968 is 869552519881.

It can be written as a sum of positive squares in 2 ways, for example, as 170116652304 + 18798603664 = 412452^2 + 137108^2 .

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, 549978 + ... + 824806.

Almost surely, 2^188915255968 is an apocalyptic number.

It is an amenable number.

188915255968 is a deficient number, since it is larger than the sum of its proper divisors (183030321812).

188915255968 is a wasteful number, since it uses less digits than its factorization.

188915255968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296320 (or 296312 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 67.

The spelling of 188915255968 in words is "one hundred eighty-eight billion, nine hundred fifteen million, two hundred fifty-five thousand, nine hundred sixty-eight".