11564112645 has 96 divisors (see below), whose sum is σ = 21461731200. Its totient is φ = 5748890112.

The previous prime is 11564112643. The next prime is 11564112673. The reversal of 11564112645 is 54621146511.

11564112645 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 4 + 1 + 1 + 2 + 645 = 666.

It is not a de Polignac number, because 11564112645 - 2¹ = 11564112643 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11564112641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6710754 + ... + 6712476.

It is an arithmetic number, because the mean of its divisors is an integer number (223559700).

Almost surely, 2^11564112645 is an apocalyptic number.

11564112645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11564112645 is a deficient number, since it is larger than the sum of its proper divisors (9897618555).

11564112645 is a wasteful number, since it uses less digits than its factorization.

11564112645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1936 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The spelling of 11564112645 in words is "eleven billion, five hundred sixty-four million, one hundred twelve thousand, six hundred forty-five".