115660791639 has 12 divisors (see below), whose sum is σ = 167139311976. Its totient is φ = 77073167952.

The previous prime is 115660791637. The next prime is 115660791641. The reversal of 115660791639 is 936197066511.

It is a happy number.

115660791639 is a `hidden beast` number, since 1 + 1 + 566 + 0 + 79 + 1 + 6 + 3 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (115660791637) and next prime (115660791641).

It is not a de Polignac number, because 115660791639 - 2¹ = 115660791637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115660791637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2814004 + ... + 2854809.

It is an arithmetic number, because the mean of its divisors is an integer number (13928275998).

Almost surely, 2^115660791639 is an apocalyptic number.

115660791639 is a deficient number, since it is larger than the sum of its proper divisors (51478520337).

115660791639 is a wasteful number, since it uses less digits than its factorization.

115660791639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671086 (or 5671083 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The spelling of 115660791639 in words is "one hundred fifteen billion, six hundred sixty million, seven hundred ninety-one thousand, six hundred thirty-nine".