11664541717 has 4 divisors (see below), whose sum is σ = 11664801036. Its totient is φ = 11664282400.

The previous prime is 11664541699. The next prime is 11664541727. The reversal of 11664541717 is 71714546611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71714546611 = 229 ⋅313163959.

It can be written as a sum of positive squares in 2 ways, for example, as 4620464676 + 7044077041 = 67974^2 + 83929^2 .

It is a cyclic number.

It is not a de Polignac number, because 11664541717 - 2⁷ = 11664541589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11664541727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42784 + ... + 158617.

It is an arithmetic number, because the mean of its divisors is an integer number (2916200259).

Almost surely, 2^11664541717 is an apocalyptic number.

It is an amenable number.

11664541717 is a deficient number, since it is larger than the sum of its proper divisors (259319).

11664541717 is an equidigital number, since it uses as much as digits as its factorization.

11664541717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259318.

The product of its digits is 141120, while the sum is 43.

The spelling of 11664541717 in words is "eleven billion, six hundred sixty-four million, five hundred forty-one thousand, seven hundred seventeen".