115660791640 has 32 divisors (see below), whose sum is σ = 269210466000. Its totient is φ = 44668994944.

The previous prime is 115660791637. The next prime is 115660791641. The reversal of 115660791640 is 46197066511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115660791641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49852630 + ... + 49854949.

Almost surely, 2^115660791640 is an apocalyptic number.

115660791640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115660791640 is an abundant number, since it is smaller than the sum of its proper divisors (153549674360).

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

115660791640 is a wasteful number, since it uses less digits than its factorization.

115660791640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99707619 (or 99707615 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 115660791640 in words is "one hundred fifteen billion, six hundred sixty million, seven hundred ninety-one thousand, six hundred forty".