11564536055 has 16 divisors (see below), whose sum is σ = 14266221984. Its totient is φ = 8994040320.

The previous prime is 11564536033. The next prime is 11564536063. The reversal of 11564536055 is 55063546511.

It is not a de Polignac number, because 11564536055 - 2¹² = 11564531959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41654 + ... + 157683.

It is an arithmetic number, because the mean of its divisors is an integer number (891638874).

Almost surely, 2^11564536055 is an apocalyptic number.

11564536055 is a deficient number, since it is larger than the sum of its proper divisors (2701685929).

11564536055 is a wasteful number, since it uses less digits than its factorization.

11564536055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199666.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 11564536055 in words is "eleven billion, five hundred sixty-four million, five hundred thirty-six thousand, fifty-five".