316161256447 has 2 divisors, whose sum is σ = 316161256448. Its totient is φ = 316161256446.

The previous prime is 316161256391. The next prime is 316161256457. The reversal of 316161256447 is 744652161613.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (744652161613) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316161256447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 316161256397 and 316161256406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316161256457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158080628223 + 158080628224.

It is an arithmetic number, because the mean of its divisors is an integer number (158080628224).

Almost surely, 2^316161256447 is an apocalyptic number.

316161256447 is a deficient number, since it is larger than the sum of its proper divisors (1).

316161256447 is an equidigital number, since it uses as much as digits as its factorization.

316161256447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The spelling of 316161256447 in words is "three hundred sixteen billion, one hundred sixty-one million, two hundred fifty-six thousand, four hundred forty-seven".