123172523488188 has 72 divisors (see below), whose sum is σ = 313264339302096. Its totient is φ = 40805601984000.

The previous prime is 123172523488187. The next prime is 123172523488199. The reversal of 123172523488188 is 881884325271321.

It is a happy number.

123172523488188 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 72 + 5 + 2 + 3 + 488 + 1 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123172523488187) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13914243 + ... + 20975013.

It is an arithmetic number, because the mean of its divisors is an integer number (4350893601418).

Almost surely, 2^{123172523488188} is an apocalyptic number.

123172523488188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123172523488188 is an abundant number, since it is smaller than the sum of its proper divisors (190091815813908).

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

123172523488188 is a wasteful number, since it uses less digits than its factorization.

123172523488188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7063755 (or 7063750 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 63.

The spelling of 123172523488188 in words is "one hundred twenty-three trillion, one hundred seventy-two billion, five hundred twenty-three million, four hundred eighty-eight thousand, one hundred eighty-eight".