666347513766117 has 32 divisors (see below), whose sum is σ = 906414325899264. Its totient is φ = 435331953302400.

The previous prime is 666347513766079. The next prime is 666347513766163. The reversal of 666347513766117 is 711667315743666.

666347513766117 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 666347513766117 - 2¹⁰ = 666347513765093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666347513766217) 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, 780748228 + ... + 781601234.

It is an arithmetic number, because the mean of its divisors is an integer number (28325447684352).

Almost surely, 2^{666347513766117} is an apocalyptic number.

It is an amenable number.

666347513766117 is a deficient number, since it is larger than the sum of its proper divisors (240066812133147).

666347513766117 is a wasteful number, since it uses less digits than its factorization.

666347513766117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875209.

The product of its digits is 480090240, while the sum is 69.

The spelling of 666347513766117 in words is "six hundred sixty-six trillion, three hundred forty-seven billion, five hundred thirteen million, seven hundred sixty-six thousand, one hundred seventeen".