15916797713 has 2 divisors, whose sum is σ = 15916797714. Its totient is φ = 15916797712.

The previous prime is 15916797691. The next prime is 15916797719. The reversal of 15916797713 is 31779761951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13209364624 + 2707433089 = 114932^2 + 52033^2 .

It is a cyclic number.

It is not a de Polignac number, because 15916797713 - 2²² = 15912603409 is a prime.

It is not a weakly prime, because it can be changed into another prime (15916797719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7958398856 + 7958398857.

It is an arithmetic number, because the mean of its divisors is an integer number (7958398857).

Almost surely, 2^15916797713 is an apocalyptic number.

It is an amenable number.

15916797713 is a deficient number, since it is larger than the sum of its proper divisors (1).

15916797713 is an equidigital number, since it uses as much as digits as its factorization.

15916797713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2500470, while the sum is 56.

The spelling of 15916797713 in words is "fifteen billion, nine hundred sixteen million, seven hundred ninety-seven thousand, seven hundred thirteen".