115666516594 has 8 divisors (see below), whose sum is σ = 174244409820. Its totient is φ = 57585046656.

The previous prime is 115666516561. The next prime is 115666516601. The reversal of 115666516594 is 495615666511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106088958369 + 9577558225 = 325713^2 + 97865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124105239 + ... + 124106170.

Almost surely, 2^115666516594 is an apocalyptic number.

115666516594 is a deficient number, since it is larger than the sum of its proper divisors (58577893226).

115666516594 is a wasteful number, since it uses less digits than its factorization.

115666516594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248211644.

The product of its digits is 5832000, while the sum is 55.

The spelling of 115666516594 in words is "one hundred fifteen billion, six hundred sixty-six million, five hundred sixteen thousand, five hundred ninety-four".