11637874564 has 12 divisors (see below), whose sum is σ = 20369920284. Its totient is φ = 5817897344.

The previous prime is 11637874553. The next prime is 11637874571. The reversal of 11637874564 is 46547873611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1250188164 + 10387686400 = 35358^2 + 101920^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234529 + ... + 279784.

It is an arithmetic number, because the mean of its divisors is an integer number (1697493357).

Almost surely, 2^11637874564 is an apocalyptic number.

It is an amenable number.

11637874564 is a deficient number, since it is larger than the sum of its proper divisors (8732045720).

11637874564 is a wasteful number, since it uses less digits than its factorization.

11637874564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519974 (or 519972 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 52.

The spelling of 11637874564 in words is "eleven billion, six hundred thirty-seven million, eight hundred seventy-four thousand, five hundred sixty-four".