316866542249 has 2 divisors, whose sum is σ = 316866542250. Its totient is φ = 316866542248.

The previous prime is 316866542243. The next prime is 316866542257. The reversal of 316866542249 is 942245668613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195558528400 + 121308013849 = 442220^2 + 348293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316866542249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 316866542194 and 316866542203.

It is not a weakly prime, because it can be changed into another prime (316866542243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158433271124 + 158433271125.

It is an arithmetic number, because the mean of its divisors is an integer number (158433271125).

Almost surely, 2^316866542249 is an apocalyptic number.

It is an amenable number.

316866542249 is a deficient number, since it is larger than the sum of its proper divisors (1).

316866542249 is an equidigital number, since it uses as much as digits as its factorization.

316866542249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 56.

The spelling of 316866542249 in words is "three hundred sixteen billion, eight hundred sixty-six million, five hundred forty-two thousand, two hundred forty-nine".