79731613823 has 2 divisors, whose sum is σ = 79731613824. Its totient is φ = 79731613822.

The previous prime is 79731613757. The next prime is 79731613831. The reversal of 79731613823 is 32831613797.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79731613823 - 2¹⁰ = 79731612799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79731613853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39865806911 + 39865806912.

It is an arithmetic number, because the mean of its divisors is an integer number (39865806912).

Almost surely, 2^79731613823 is an apocalyptic number.

79731613823 is a deficient number, since it is larger than the sum of its proper divisors (1).

79731613823 is an equidigital number, since it uses as much as digits as its factorization.

79731613823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The spelling of 79731613823 in words is "seventy-nine billion, seven hundred thirty-one million, six hundred thirteen thousand, eight hundred twenty-three".