188045596881 has 12 divisors (see below), whose sum is σ = 272240151040. Its totient is φ = 125078162040.

The previous prime is 188045596867. The next prime is 188045596889. The reversal of 188045596881 is 188695540881.

188045596881 is a `hidden beast` number, since 18 + 8 + 0 + 4 + 559 + 68 + 8 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-188045596881 is a prime.

It is a super-2 number, since 2×188045596881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188045596889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23793265 + ... + 23801166.

Almost surely, 2^188045596881 is an apocalyptic number.

It is an amenable number.

188045596881 is a deficient number, since it is larger than the sum of its proper divisors (84194554159).

188045596881 is a wasteful number, since it uses less digits than its factorization.

188045596881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47594876 (or 47594873 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 63.

The spelling of 188045596881 in words is "one hundred eighty-eight billion, forty-five million, five hundred ninety-six thousand, eight hundred eighty-one".