79719698593 has 2 divisors, whose sum is σ = 79719698594. Its totient is φ = 79719698592.

The previous prime is 79719698587. The next prime is 79719698657. The reversal of 79719698593 is 39589691797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66284106849 + 13435591744 = 257457^2 + 115912^2 .

It is a cyclic number.

It is not a de Polignac number, because 79719698593 - 2³³ = 71129764001 is a prime.

It is not a weakly prime, because it can be changed into another prime (79719690593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39859849296 + 39859849297.

It is an arithmetic number, because the mean of its divisors is an integer number (39859849297).

Almost surely, 2^79719698593 is an apocalyptic number.

It is an amenable number.

79719698593 is a deficient number, since it is larger than the sum of its proper divisors (1).

79719698593 is an equidigital number, since it uses as much as digits as its factorization.

79719698593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 231472080, while the sum is 73.

The spelling of 79719698593 in words is "seventy-nine billion, seven hundred nineteen million, six hundred ninety-eight thousand, five hundred ninety-three".