117512111992 has 64 divisors (see below), whose sum is σ = 254632896000. Its totient is φ = 50247267840.

The previous prime is 117512111989. The next prime is 117512112017. The reversal of 117512111992 is 299111215711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3121393 + ... + 3158815.

It is an arithmetic number, because the mean of its divisors is an integer number (3978639000).

Almost surely, 2^117512111992 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 117512111992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127316448000).

117512111992 is an abundant number, since it is smaller than the sum of its proper divisors (137120784008).

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

117512111992 is a wasteful number, since it uses less digits than its factorization.

117512111992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39556 (or 39552 counting only the distinct ones).

The product of its digits is 11340, while the sum is 40.

The spelling of 117512111992 in words is "one hundred seventeen billion, five hundred twelve million, one hundred eleven thousand, nine hundred ninety-two".