188447966628 has 24 divisors (see below), whose sum is σ = 439728357600. Its totient is φ = 62813640960.

The previous prime is 188447966617. The next prime is 188447966701. The reversal of 188447966628 is 826669744881.

It is a super-2 number, since 2×188447966628² (a number of 23 digits) contains 22 as substring.

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, 57748 + ... + 616628.

It is an arithmetic number, because the mean of its divisors is an integer number (18322014900).

Almost surely, 2^188447966628 is an apocalyptic number.

It is an amenable number.

188447966628 is an abundant number, since it is smaller than the sum of its proper divisors (251280390972).

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

188447966628 is a wasteful number, since it uses less digits than its factorization.

188447966628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586987 (or 586985 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 69.

The spelling of 188447966628 in words is "one hundred eighty-eight billion, four hundred forty-seven million, nine hundred sixty-six thousand, six hundred twenty-eight".