117157061640 has 32 divisors (see below), whose sum is σ = 351471185280. Its totient is φ = 31241883072.

The previous prime is 117157061617. The next prime is 117157061657. The reversal of 117157061640 is 46160751711.

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, 488154304 + ... + 488154543.

It is an arithmetic number, because the mean of its divisors is an integer number (10983474540).

Almost surely, 2^117157061640 is an apocalyptic number.

117157061640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117157061640 is an abundant number, since it is smaller than the sum of its proper divisors (234314123640).

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

117157061640 is a wasteful number, since it uses less digits than its factorization.

117157061640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976308861 (or 976308857 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 117157061640 in words is "one hundred seventeen billion, one hundred fifty-seven million, sixty-one thousand, six hundred forty".