11664532517 has 4 divisors (see below), whose sum is σ = 12724944576. Its totient is φ = 10604120460.

The previous prime is 11664532499. The next prime is 11664532549. The reversal of 11664532517 is 71523546611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11664532517 - 2¹⁶ = 11664466981 is a prime.

It is a super-3 number, since 3×11664532517³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11664532577) 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, 530206013 + ... + 530206034.

It is an arithmetic number, because the mean of its divisors is an integer number (3181236144).

Almost surely, 2^11664532517 is an apocalyptic number.

It is an amenable number.

11664532517 is a deficient number, since it is larger than the sum of its proper divisors (1060412059).

11664532517 is a wasteful number, since it uses less digits than its factorization.

11664532517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060412058.

The product of its digits is 151200, while the sum is 41.

The spelling of 11664532517 in words is "eleven billion, six hundred sixty-four million, five hundred thirty-two thousand, five hundred seventeen".