11664574961 has 8 divisors (see below), whose sum is σ = 12596083584. Its totient is φ = 10737956880.

The previous prime is 11664574937. The next prime is 11664574963. The reversal of 11664574961 is 16947546611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11664574961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11664574963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217675 + ... + 1227216.

It is an arithmetic number, because the mean of its divisors is an integer number (1574510448).

Almost surely, 2^11664574961 is an apocalyptic number.

It is an amenable number.

11664574961 is a deficient number, since it is larger than the sum of its proper divisors (931508623).

11664574961 is a wasteful number, since it uses less digits than its factorization.

11664574961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445271.

The product of its digits is 1088640, while the sum is 50.

The spelling of 11664574961 in words is "eleven billion, six hundred sixty-four million, five hundred seventy-four thousand, nine hundred sixty-one".