316377643649 has 2 divisors, whose sum is σ = 316377643650. Its totient is φ = 316377643648.

The previous prime is 316377643643. The next prime is 316377643667. The reversal of 316377643649 is 946346773613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158927403649 + 157450240000 = 398657^2 + 396800^2 .

It is a cyclic number.

It is not a de Polignac number, because 316377643649 - 2¹² = 316377639553 is a prime.

It is not a weakly prime, because it can be changed into another prime (316377643643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158188821824 + 158188821825.

It is an arithmetic number, because the mean of its divisors is an integer number (158188821825).

Almost surely, 2^316377643649 is an apocalyptic number.

It is an amenable number.

316377643649 is a deficient number, since it is larger than the sum of its proper divisors (1).

316377643649 is an equidigital number, since it uses as much as digits as its factorization.

316377643649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 59.

The spelling of 316377643649 in words is "three hundred sixteen billion, three hundred seventy-seven million, six hundred forty-three thousand, six hundred forty-nine".