11515165055 has 16 divisors (see below), whose sum is σ = 13953371040. Its totient is φ = 9122092032.

The previous prime is 11515165043. The next prime is 11515165087. The reversal of 11515165055 is 55056151511.

It is a cyclic number.

It is not a de Polignac number, because 11515165055 - 2³⁰ = 10441423231 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2296391 + ... + 2301399.

It is an arithmetic number, because the mean of its divisors is an integer number (872085690).

Almost surely, 2^11515165055 is an apocalyptic number.

11515165055 is a deficient number, since it is larger than the sum of its proper divisors (2438205985).

11515165055 is a wasteful number, since it uses less digits than its factorization.

11515165055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9418.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 11515165055 in words is "eleven billion, five hundred fifteen million, one hundred sixty-five thousand, fifty-five".