316626520493 has 2 divisors, whose sum is σ = 316626520494. Its totient is φ = 316626520492.

The previous prime is 316626520487. The next prime is 316626520519. The reversal of 316626520493 is 394025626613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269399407369 + 47227113124 = 519037^2 + 217318^2 .

It is a cyclic number.

It is not a de Polignac number, because 316626520493 - 2⁴ = 316626520477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316626520403) 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, 158313260246 + 158313260247.

It is an arithmetic number, because the mean of its divisors is an integer number (158313260247).

Almost surely, 2^316626520493 is an apocalyptic number.

It is an amenable number.

316626520493 is a deficient number, since it is larger than the sum of its proper divisors (1).

316626520493 is an equidigital number, since it uses as much as digits as its factorization.

316626520493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 316626520493 in words is "three hundred sixteen billion, six hundred twenty-six million, five hundred twenty thousand, four hundred ninety-three".