318301668166609 has 2 divisors, whose sum is σ = 318301668166610. Its totient is φ = 318301668166608.

The previous prime is 318301668166589. The next prime is 318301668166697. The reversal of 318301668166609 is 906661866103813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205801174275984 + 112500493890625 = 14345772^2 + 10606625^2 .

It is a cyclic number.

It is not a de Polignac number, because 318301668166609 - 2⁵ = 318301668166577 is a prime.

It is not a weakly prime, because it can be changed into another prime (318301668166309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159150834083304 + 159150834083305.

It is an arithmetic number, because the mean of its divisors is an integer number (159150834083305).

Almost surely, 2^{318301668166609} is an apocalyptic number.

It is an amenable number.

318301668166609 is a deficient number, since it is larger than the sum of its proper divisors (1).

318301668166609 is an equidigital number, since it uses as much as digits as its factorization.

318301668166609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40310784, while the sum is 64.

The spelling of 318301668166609 in words is "three hundred eighteen trillion, three hundred one billion, six hundred sixty-eight million, one hundred sixty-six thousand, six hundred nine".