117989136972 has 168 divisors, whose sum is σ = 354776992416. Its totient is φ = 33618633984.

The previous prime is 117989136959. The next prime is 117989136997. The reversal of 117989136972 is 279631989711.

117989136972 is a `hidden beast` number, since 117 + 9 + 8 + 91 + 369 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 7605928 + ... + 7621424.

It is an arithmetic number, because the mean of its divisors is an integer number (2111767812).

Almost surely, 2^117989136972 is an apocalyptic number.

117989136972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117989136972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177388496208).

117989136972 is an abundant number, since it is smaller than the sum of its proper divisors (236787855444).

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

117989136972 is a wasteful number, since it uses less digits than its factorization.

117989136972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15899 (or 15882 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 63.

The spelling of 117989136972 in words is "one hundred seventeen billion, nine hundred eighty-nine million, one hundred thirty-six thousand, nine hundred seventy-two".