115616156565 has 32 divisors (see below), whose sum is σ = 227674895616. Its totient is φ = 48787476480.

The previous prime is 115616156543. The next prime is 115616156627. The reversal of 115616156565 is 565651616511.

It is not a de Polignac number, because 115616156565 - 2⁵ = 115616156533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42348876 + ... + 42351605.

It is an arithmetic number, because the mean of its divisors is an integer number (7114840488).

Almost surely, 2^115616156565 is an apocalyptic number.

115616156565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115616156565 is a deficient number, since it is larger than the sum of its proper divisors (112058739051).

115616156565 is a wasteful number, since it uses less digits than its factorization.

115616156565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84700509.

The product of its digits is 810000, while the sum is 48.

The spelling of 115616156565 in words is "one hundred fifteen billion, six hundred sixteen million, one hundred fifty-six thousand, five hundred sixty-five".