318617471442773 has 2 divisors, whose sum is σ = 318617471442774. Its totient is φ = 318617471442772.

The previous prime is 318617471442763. The next prime is 318617471442833. The reversal of 318617471442773 is 377244174716813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248765352656209 + 69852118786564 = 15772297^2 + 8357758^2 .

It is a cyclic number.

It is not a de Polignac number, because 318617471442773 - 2⁴ = 318617471442757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318617471442763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159308735721386 + 159308735721387.

It is an arithmetic number, because the mean of its divisors is an integer number (159308735721387).

Almost surely, 2^{318617471442773} is an apocalyptic number.

It is an amenable number.

318617471442773 is a deficient number, since it is larger than the sum of its proper divisors (1).

318617471442773 is an equidigital number, since it uses as much as digits as its factorization.

318617471442773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132765696, while the sum is 65.

The spelling of 318617471442773 in words is "three hundred eighteen trillion, six hundred seventeen billion, four hundred seventy-one million, four hundred forty-two thousand, seven hundred seventy-three".