316380208777 has 2 divisors, whose sum is σ = 316380208778. Its totient is φ = 316380208776.

The previous prime is 316380208733. The next prime is 316380208811. The reversal of 316380208777 is 777802083613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264958297081 + 51421911696 = 514741^2 + 226764^2 .

It is an emirp because it is prime and its reverse (777802083613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316380208777 - 2⁷ = 316380208649 is a prime.

It is not a weakly prime, because it can be changed into another prime (316380208717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158190104388 + 158190104389.

It is an arithmetic number, because the mean of its divisors is an integer number (158190104389).

Almost surely, 2^316380208777 is an apocalyptic number.

It is an amenable number.

316380208777 is a deficient number, since it is larger than the sum of its proper divisors (1).

316380208777 is an equidigital number, since it uses as much as digits as its factorization.

316380208777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 316380208777 in words is "three hundred sixteen billion, three hundred eighty million, two hundred eight thousand, seven hundred seventy-seven".