11664673456585 has 4 divisors (see below), whose sum is σ = 13997608147908. Its totient is φ = 9331738765264.

The previous prime is 11664673456571. The next prime is 11664673456619. The reversal of 11664673456585 is 58565437646611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6681795896889 + 4982877559696 = 2584917^2 + 2232236^2 .

It is a cyclic number.

It is not a de Polignac number, because 11664673456585 - 2²⁷ = 11664539238857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11664673456585.

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, 1166467345654 + ... + 1166467345663.

It is an arithmetic number, because the mean of its divisors is an integer number (3499402036977).

Almost surely, 2^{11664673456585} is an apocalyptic number.

It is an amenable number.

11664673456585 is a deficient number, since it is larger than the sum of its proper divisors (2332934691323).

11664673456585 is an equidigital number, since it uses as much as digits as its factorization.

11664673456585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332934691322.

The product of its digits is 435456000, while the sum is 67.

The spelling of 11664673456585 in words is "eleven trillion, six hundred sixty-four billion, six hundred seventy-three million, four hundred fifty-six thousand, five hundred eighty-five".