318591764797 has 2 divisors, whose sum is σ = 318591764798. Its totient is φ = 318591764796.

The previous prime is 318591764759. The next prime is 318591764831. The reversal of 318591764797 is 797467195813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184771882201 + 133819882596 = 429851^2 + 365814^2 .

It is a cyclic number.

It is not a de Polignac number, because 318591764797 - 2¹⁵ = 318591732029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318591764717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159295882398 + 159295882399.

It is an arithmetic number, because the mean of its divisors is an integer number (159295882399).

Almost surely, 2^318591764797 is an apocalyptic number.

It is an amenable number.

318591764797 is a deficient number, since it is larger than the sum of its proper divisors (1).

318591764797 is an equidigital number, since it uses as much as digits as its factorization.

318591764797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80015040, while the sum is 67.

The spelling of 318591764797 in words is "three hundred eighteen billion, five hundred ninety-one million, seven hundred sixty-four thousand, seven hundred ninety-seven".