115660610091 has 24 divisors (see below), whose sum is σ = 180003257616. Its totient is φ = 71141440320.

The previous prime is 115660610081. The next prime is 115660610101. The reversal of 115660610091 is 190016066511.

115660610091 is a `hidden beast` number, since 1 + 1 + 566 + 0 + 6 + 1 + 0 + 0 + 91 = 666.

It is an interprime number because it is at equal distance from previous prime (115660610081) and next prime (115660610101).

It is not a de Polignac number, because 115660610091 - 2⁶ = 115660610027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115660610081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6421 + ... + 481001.

It is an arithmetic number, because the mean of its divisors is an integer number (7500135734).

Almost surely, 2^115660610091 is an apocalyptic number.

115660610091 is a deficient number, since it is larger than the sum of its proper divisors (64342647525).

115660610091 is a wasteful number, since it uses less digits than its factorization.

115660610091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476683 (or 476680 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The spelling of 115660610091 in words is "one hundred fifteen billion, six hundred sixty million, six hundred ten thousand, ninety-one".