666930166313 has 2 divisors, whose sum is σ = 666930166314. Its totient is φ = 666930166312.

The previous prime is 666930166303. The next prime is 666930166321. The reversal of 666930166313 is 313661039666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 640268828224 + 26661338089 = 800168^2 + 163283^2 .

It is a cyclic number.

It is not a de Polignac number, because 666930166313 - 2⁶ = 666930166249 is a prime.

It is not a weakly prime, because it can be changed into another prime (666930166303) 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 as a sum of consecutive naturals, namely, 333465083156 + 333465083157.

It is an arithmetic number, because the mean of its divisors is an integer number (333465083157).

Almost surely, 2^666930166313 is an apocalyptic number.

It is an amenable number.

666930166313 is a deficient number, since it is larger than the sum of its proper divisors (1).

666930166313 is an equidigital number, since it uses as much as digits as its factorization.

666930166313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 50.

The spelling of 666930166313 in words is "six hundred sixty-six billion, nine hundred thirty million, one hundred sixty-six thousand, three hundred thirteen".