318924054711217 has 2 divisors, whose sum is σ = 318924054711218. Its totient is φ = 318924054711216.

The previous prime is 318924054711169. The next prime is 318924054711239. The reversal of 318924054711217 is 712117450429813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171154527420816 + 147769527290401 = 13082604^2 + 12156049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318924054711217 is a prime.

It is not a weakly prime, because it can be changed into another prime (318924054711257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159462027355608 + 159462027355609.

It is an arithmetic number, because the mean of its divisors is an integer number (159462027355609).

Almost surely, 2^{318924054711217} is an apocalyptic number.

It is an amenable number.

318924054711217 is a deficient number, since it is larger than the sum of its proper divisors (1).

318924054711217 is an equidigital number, since it uses as much as digits as its factorization.

318924054711217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 318924054711217 in words is "three hundred eighteen trillion, nine hundred twenty-four billion, fifty-four million, seven hundred eleven thousand, two hundred seventeen".