117915917916 has 24 divisors (see below), whose sum is σ = 275190228880. Its totient is φ = 39297722112.

The previous prime is 117915917909. The next prime is 117915917921. The reversal of 117915917916 is 619719519711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883021 + ... + 1007748.

Almost surely, 2^117915917916 is an apocalyptic number.

It is an amenable number.

117915917916 is an abundant number, since it is smaller than the sum of its proper divisors (157274310964).

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

117915917916 is a wasteful number, since it uses less digits than its factorization.

117915917916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895973 (or 1895971 counting only the distinct ones).

The product of its digits is 1071630, while the sum is 57.

The spelling of 117915917916 in words is "one hundred seventeen billion, nine hundred fifteen million, nine hundred seventeen thousand, nine hundred sixteen".