117115661500 has 24 divisors (see below), whose sum is σ = 255780605808. Its totient is φ = 46846264400.

The previous prime is 117115661483. The next prime is 117115661519. The reversal of 117115661500 is 5166511711.

It is a happy number.

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, 117115162 + ... + 117116161.

It is an arithmetic number, because the mean of its divisors is an integer number (10657525242).

Almost surely, 2^117115661500 is an apocalyptic number.

117115661500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117115661500 is an abundant number, since it is smaller than the sum of its proper divisors (138664944308).

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

117115661500 is a wasteful number, since it uses less digits than its factorization.

117115661500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234231342 (or 234231330 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 34.

The spelling of 117115661500 in words is "one hundred seventeen billion, one hundred fifteen million, six hundred sixty-one thousand, five hundred".