11312571664 has 40 divisors (see below), whose sum is σ = 23238488088. Its totient is φ = 5316433920.

The previous prime is 11312571659. The next prime is 11312571701. The reversal of 11312571664 is 46617521311.

It can be written as a sum of positive squares in 4 ways, for example, as 5568144400 + 5744427264 = 74620^2 + 75792^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178434 + ... + 233374.

Almost surely, 2^11312571664 is an apocalyptic number.

It is an amenable number.

11312571664 is an abundant number, since it is smaller than the sum of its proper divisors (11925916424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11312571664 is a wasteful number, since it uses less digits than its factorization.

11312571664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55723 (or 55717 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The spelling of 11312571664 in words is "eleven billion, three hundred twelve million, five hundred seventy-one thousand, six hundred sixty-four".