188681809152 has 36 divisors (see below), whose sum is σ = 502168775360. Its totient is φ = 62893936128.

The previous prime is 188681809139. The next prime is 188681809187. The reversal of 188681809152 is 251908186881.

It is a junction number, because it is equal to n+sod(n) for n = 188681809092 and 188681809101.

It is a congruent number.

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, 122838952 + ... + 122840487.

Almost surely, 2^188681809152 is an apocalyptic number.

188681809152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

188681809152 is an abundant number, since it is smaller than the sum of its proper divisors (313486966208).

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

188681809152 is an equidigital number, since it uses as much as digits as its factorization.

188681809152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245679458 (or 245679444 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 57.

The spelling of 188681809152 in words is "one hundred eighty-eight billion, six hundred eighty-one million, eight hundred nine thousand, one hundred fifty-two".