79719698507 has 2 divisors, whose sum is σ = 79719698508. Its totient is φ = 79719698506.

The previous prime is 79719698501. The next prime is 79719698551. The reversal of 79719698507 is 70589691797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79719698507 - 2⁴ = 79719698491 is a prime.

It is not a weakly prime, because it can be changed into another prime (79719698501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39859849253 + 39859849254.

It is an arithmetic number, because the mean of its divisors is an integer number (39859849254).

Almost surely, 2^79719698507 is an apocalyptic number.

79719698507 is a deficient number, since it is larger than the sum of its proper divisors (1).

79719698507 is an equidigital number, since it uses as much as digits as its factorization.

79719698507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60011280, while the sum is 68.

The spelling of 79719698507 in words is "seventy-nine billion, seven hundred nineteen million, six hundred ninety-eight thousand, five hundred seven".