15716257679 has 2 divisors, whose sum is σ = 15716257680. Its totient is φ = 15716257678.

The previous prime is 15716257621. The next prime is 15716257681. The reversal of 15716257679 is 97675261751.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15716257679 - 2⁸ = 15716257423 is a prime.

Together with 15716257681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15716257619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7858128839 + 7858128840.

It is an arithmetic number, because the mean of its divisors is an integer number (7858128840).

Almost surely, 2^15716257679 is an apocalyptic number.

15716257679 is a deficient number, since it is larger than the sum of its proper divisors (1).

15716257679 is an equidigital number, since it uses as much as digits as its factorization.

15716257679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5556600, while the sum is 56.

The spelling of 15716257679 in words is "fifteen billion, seven hundred sixteen million, two hundred fifty-seven thousand, six hundred seventy-nine".