11664646611 has 48 divisors (see below), whose sum is σ = 17441529600. Its totient is φ = 6913700352.

The previous prime is 11664646589. The next prime is 11664646639.

11664646611 is nontrivially palindromic in base 10.

11664646611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11664646611 - 2²⁶ = 11597537747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11664646661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7230841 + ... + 7232453.

It is an arithmetic number, because the mean of its divisors is an integer number (363365200).

Almost surely, 2^11664646611 is an apocalyptic number.

11664646611 is a deficient number, since it is larger than the sum of its proper divisors (5776882989).

11664646611 is a wasteful number, since it uses less digits than its factorization.

11664646611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 2091 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The spelling of 11664646611 in words is "eleven billion, six hundred sixty-four million, six hundred forty-six thousand, six hundred eleven".