316065778997 has 2 divisors, whose sum is σ = 316065778998. Its totient is φ = 316065778996.

The previous prime is 316065778991. The next prime is 316065779041. The reversal of 316065778997 is 799877560613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315764201041 + 301577956 = 561929^2 + 17366^2 .

It is a cyclic number.

It is not a de Polignac number, because 316065778997 - 2¹² = 316065774901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316065778991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158032889498 + 158032889499.

It is an arithmetic number, because the mean of its divisors is an integer number (158032889499).

Almost surely, 2^316065778997 is an apocalyptic number.

It is an amenable number.

316065778997 is a deficient number, since it is larger than the sum of its proper divisors (1).

316065778997 is an equidigital number, since it uses as much as digits as its factorization.

316065778997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120022560, while the sum is 68.

The spelling of 316065778997 in words is "three hundred sixteen billion, sixty-five million, seven hundred seventy-eight thousand, nine hundred ninety-seven".