317765978833 has 2 divisors, whose sum is σ = 317765978834. Its totient is φ = 317765978832.

The previous prime is 317765978731. The next prime is 317765978839. The reversal of 317765978833 is 338879567713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282249937984 + 35516040849 = 531272^2 + 188457^2 .

It is an emirp because it is prime and its reverse (338879567713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317765978833 - 2³³ = 309176044241 is a prime.

It is not a weakly prime, because it can be changed into another prime (317765978839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158882989416 + 158882989417.

It is an arithmetic number, because the mean of its divisors is an integer number (158882989417).

Almost surely, 2^317765978833 is an apocalyptic number.

It is an amenable number.

317765978833 is a deficient number, since it is larger than the sum of its proper divisors (1).

317765978833 is an equidigital number, since it uses as much as digits as its factorization.

317765978833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160030080, while the sum is 67.

The spelling of 317765978833 in words is "three hundred seventeen billion, seven hundred sixty-five million, nine hundred seventy-eight thousand, eight hundred thirty-three".