317765978839 has 2 divisors, whose sum is σ = 317765978840. Its totient is φ = 317765978838.

The previous prime is 317765978833. The next prime is 317765978867. The reversal of 317765978839 is 938879567713.

It is a weak prime.

It is an emirp because it is prime and its reverse (938879567713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317765978839 - 2²⁹ = 317229107927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317765978833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158882989419 + 158882989420.

It is an arithmetic number, because the mean of its divisors is an integer number (158882989420).

Almost surely, 2^317765978839 is an apocalyptic number.

317765978839 is a deficient number, since it is larger than the sum of its proper divisors (1).

317765978839 is an equidigital number, since it uses as much as digits as its factorization.

317765978839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480090240, while the sum is 73.

The spelling of 317765978839 in words is "three hundred seventeen billion, seven hundred sixty-five million, nine hundred seventy-eight thousand, eight hundred thirty-nine".