188817864552 has 48 divisors (see below), whose sum is σ = 512696398500. Its totient is φ = 62777481216.

The previous prime is 188817864527. The next prime is 188817864577. The reversal of 188817864552 is 255468718881.

188817864552 is a `hidden beast` number, since 1 + 8 + 8 + 8 + 1 + 78 + 6 + 4 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (188817864527) and next prime (188817864577).

It can be written as a sum of positive squares in 2 ways, for example, as 174745736676 + 14072127876 = 418026^2 + 118626^2 .

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 188817864552.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3342777 + ... + 3398792.

Almost surely, 2^188817864552 is an apocalyptic number.

188817864552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

188817864552 is an abundant number, since it is smaller than the sum of its proper divisors (323878533948).

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

188817864552 is a wasteful number, since it uses less digits than its factorization.

188817864552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741970 (or 6741963 counting only the distinct ones).

The product of its digits is 34406400, while the sum is 63.

The spelling of 188817864552 in words is "one hundred eighty-eight billion, eight hundred seventeen million, eight hundred sixty-four thousand, five hundred fifty-two".