117188928156 has 96 divisors (see below), whose sum is σ = 293667897600. Its totient is φ = 36258693120.

The previous prime is 117188928139. The next prime is 117188928191. The reversal of 117188928156 is 651829881711.

117188928156 = 16413² + 16414² + ... + 16836².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 117188928096 and 117188928105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9286291 + ... + 9298901.

It is an arithmetic number, because the mean of its divisors is an integer number (3059040600).

Almost surely, 2^117188928156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117188928156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146833948800).

117188928156 is an abundant number, since it is smaller than the sum of its proper divisors (176478969444).

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

117188928156 is a wasteful number, since it uses less digits than its factorization.

117188928156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13459 (or 13457 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 57.

The spelling of 117188928156 in words is "one hundred seventeen billion, one hundred eighty-eight million, nine hundred twenty-eight thousand, one hundred fifty-six".