11555116855 has 48 divisors (see below), whose sum is σ = 15740559360. Its totient is φ = 8105106240.

The previous prime is 11555116849. The next prime is 11555116871. The reversal of 11555116855 is 55861155511.

It is not a de Polignac number, because 11555116855 - 2⁹ = 11555116343 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 47 ways as a sum of consecutive naturals, for example, 2097034 + ... + 2102536.

It is an arithmetic number, because the mean of its divisors is an integer number (327928320).

Almost surely, 2^11555116855 is an apocalyptic number.

11555116855 is a deficient number, since it is larger than the sum of its proper divisors (4185442505).

11555116855 is a wasteful number, since it uses less digits than its factorization.

11555116855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5612 (or 5581 counting only the distinct ones).

The product of its digits is 150000, while the sum is 43.

The spelling of 11555116855 in words is "eleven billion, five hundred fifty-five million, one hundred sixteen thousand, eight hundred fifty-five".