11561264117156 has 96 divisors (see below), whose sum is σ = 22068183594240. Its totient is φ = 5267815488000.

The previous prime is 11561264117111. The next prime is 11561264117167. The reversal of 11561264117156 is 65171146216511.

It is a self number, because there is not a number n which added to its sum of digits gives 11561264117156.

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, 3044839850 + ... + 3044843646.

It is an arithmetic number, because the mean of its divisors is an integer number (229876912440).

Almost surely, 2^{11561264117156} is an apocalyptic number.

It is an amenable number.

11561264117156 is a deficient number, since it is larger than the sum of its proper divisors (10506919477084).

11561264117156 is a wasteful number, since it uses less digits than its factorization.

11561264117156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445 (or 5443 counting only the distinct ones).

The product of its digits is 302400, while the sum is 47.

The spelling of 11561264117156 in words is "eleven trillion, five hundred sixty-one billion, two hundred sixty-four million, one hundred seventeen thousand, one hundred fifty-six".