316161256457 has 2 divisors, whose sum is σ = 316161256458. Its totient is φ = 316161256456.

The previous prime is 316161256447. The next prime is 316161256483. The reversal of 316161256457 is 754652161613.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300014725696 + 16146530761 = 547736^2 + 127069^2 .

It is a cyclic number.

It is not a de Polignac number, because 316161256457 - 2¹⁰ = 316161255433 is a prime.

It is not a weakly prime, because it can be changed into another prime (316161256447) 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, 158080628228 + 158080628229.

It is an arithmetic number, because the mean of its divisors is an integer number (158080628229).

Almost surely, 2^316161256457 is an apocalyptic number.

It is an amenable number.

316161256457 is a deficient number, since it is larger than the sum of its proper divisors (1).

316161256457 is an equidigital number, since it uses as much as digits as its factorization.

316161256457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The spelling of 316161256457 in words is "three hundred sixteen billion, one hundred sixty-one million, two hundred fifty-six thousand, four hundred fifty-seven".