316872396828161 has 2 divisors, whose sum is σ = 316872396828162. Its totient is φ = 316872396828160.

The previous prime is 316872396828079. The next prime is 316872396828173. The reversal of 316872396828161 is 161828693278613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205593844039936 + 111278552788225 = 14338544^2 + 10548865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316872396828161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (316872396828061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158436198414080 + 158436198414081.

It is an arithmetic number, because the mean of its divisors is an integer number (158436198414081).

Almost surely, 2^{316872396828161} is an apocalyptic number.

It is an amenable number.

316872396828161 is a deficient number, since it is larger than the sum of its proper divisors (1).

316872396828161 is an equidigital number, since it uses as much as digits as its factorization.

316872396828161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250822656, while the sum is 71.

The spelling of 316872396828161 in words is "three hundred sixteen trillion, eight hundred seventy-two billion, three hundred ninety-six million, eight hundred twenty-eight thousand, one hundred sixty-one".