11644666644611 has 32 divisors (see below), whose sum is σ = 15778235827200. Its totient is φ = 8298942065280.

The previous prime is 11644666644593. The next prime is 11644666644617.

11644666644611 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 11644666644611 - 2⁶ = 11644666644547 is a prime.

It is a super-2 number, since 2×11644666644611² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11644666644617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53253431 + ... + 53471648.

It is an arithmetic number, because the mean of its divisors is an integer number (493069869600).

Almost surely, 2^{11644666644611} is an apocalyptic number.

11644666644611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11644666644611 is a deficient number, since it is larger than the sum of its proper divisors (4133569182589).

11644666644611 is a wasteful number, since it uses less digits than its factorization.

11644666644611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106725219.

The product of its digits is 11943936, while the sum is 56.

The spelling of 11644666644611 in words is "eleven trillion, six hundred forty-four billion, six hundred sixty-six million, six hundred forty-four thousand, six hundred eleven".