316261578697 has 2 divisors, whose sum is σ = 316261578698. Its totient is φ = 316261578696.

The previous prime is 316261578671. The next prime is 316261578701. The reversal of 316261578697 is 796875162613.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302504400016 + 13757178681 = 550004^2 + 117291^2 .

It is a cyclic number.

It is not a de Polignac number, because 316261578697 - 2¹¹ = 316261576649 is a prime.

It is not a weakly prime, because it can be changed into another prime (316261578497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158130789348 + 158130789349.

It is an arithmetic number, because the mean of its divisors is an integer number (158130789349).

Almost surely, 2^316261578697 is an apocalyptic number.

It is an amenable number.

316261578697 is a deficient number, since it is larger than the sum of its proper divisors (1).

316261578697 is an equidigital number, since it uses as much as digits as its factorization.

316261578697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 61.

The spelling of 316261578697 in words is "three hundred sixteen billion, two hundred sixty-one million, five hundred seventy-eight thousand, six hundred ninety-seven".