79395865823 has 2 divisors, whose sum is σ = 79395865824. Its totient is φ = 79395865822.

The previous prime is 79395865793. The next prime is 79395865903. The reversal of 79395865823 is 32856859397.

It is a weak prime.

It is an emirp because it is prime and its reverse (32856859397) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79395865823 - 2⁸ = 79395865567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79395865823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79395825823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39697932911 + 39697932912.

It is an arithmetic number, because the mean of its divisors is an integer number (39697932912).

Almost surely, 2^79395865823 is an apocalyptic number.

79395865823 is a deficient number, since it is larger than the sum of its proper divisors (1).

79395865823 is an equidigital number, since it uses as much as digits as its factorization.

79395865823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97977600, while the sum is 65.

The spelling of 79395865823 in words is "seventy-nine billion, three hundred ninety-five million, eight hundred sixty-five thousand, eight hundred twenty-three".