188718332072 has 8 divisors (see below), whose sum is σ = 353846872650. Its totient is φ = 94359166032.

The previous prime is 188718331951. The next prime is 188718332087. The reversal of 188718332072 is 270233817881.

It can be written as a sum of positive squares in only one way, i.e., 185369858116 + 3348473956 = 430546^2 + 57866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×188718332072² (a number of 23 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 188718332072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11794895747 + ... + 11794895762.

Almost surely, 2^188718332072 is an apocalyptic number.

It is an amenable number.

188718332072 is a deficient number, since it is larger than the sum of its proper divisors (165128540578).

188718332072 is a wasteful number, since it uses less digits than its factorization.

188718332072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23589791515 (or 23589791511 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 188718332072 in words is "one hundred eighty-eight billion, seven hundred eighteen million, three hundred thirty-two thousand, seventy-two".