115991287564 has 12 divisors (see below), whose sum is σ = 202989239488. Its totient is φ = 57994362000.

The previous prime is 115991287553. The next prime is 115991287591. The reversal of 115991287564 is 465782199511.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 115991287499 and 115991287508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99987 + ... + 491914.

Almost surely, 2^115991287564 is an apocalyptic number.

It is an amenable number.

115991287564 is a deficient number, since it is larger than the sum of its proper divisors (86997951924).

115991287564 is a wasteful number, since it uses less digits than its factorization.

115991287564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640896 (or 640894 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 58.

The spelling of 115991287564 in words is "one hundred fifteen billion, nine hundred ninety-one million, two hundred eighty-seven thousand, five hundred sixty-four".