318686712769 has 2 divisors, whose sum is σ = 318686712770. Its totient is φ = 318686712768.

The previous prime is 318686712761. The next prime is 318686712803. The reversal of 318686712769 is 967217686813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231226339600 + 87460373169 = 480860^2 + 295737^2 .

It is a cyclic number.

It is not a de Polignac number, because 318686712769 - 2³ = 318686712761 is a prime.

It is a super-2 number, since 2×318686712769² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 318686712769.

It is not a weakly prime, because it can be changed into another prime (318686712761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159343356384 + 159343356385.

It is an arithmetic number, because the mean of its divisors is an integer number (159343356385).

Almost surely, 2^318686712769 is an apocalyptic number.

It is an amenable number.

318686712769 is a deficient number, since it is larger than the sum of its proper divisors (1).

318686712769 is an equidigital number, since it uses as much as digits as its factorization.

318686712769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36578304, while the sum is 64.

The spelling of 318686712769 in words is "three hundred eighteen billion, six hundred eighty-six million, seven hundred twelve thousand, seven hundred sixty-nine".