79395865793 has 2 divisors, whose sum is σ = 79395865794. Its totient is φ = 79395865792.

The previous prime is 79395865711. The next prime is 79395865823. The reversal of 79395865793 is 39756859397.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76387562689 + 3008303104 = 276383^2 + 54848^2 .

It is an emirp because it is prime and its reverse (39756859397) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79395865793 - 2⁸ = 79395865537 is a prime.

It is not a weakly prime, because it can be changed into another prime (79395865993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39697932896 + 39697932897.

It is an arithmetic number, because the mean of its divisors is an integer number (39697932897).

Almost surely, 2^79395865793 is an apocalyptic number.

It is an amenable number.

79395865793 is a deficient number, since it is larger than the sum of its proper divisors (1).

79395865793 is an equidigital number, since it uses as much as digits as its factorization.

79395865793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 385786800, while the sum is 71.

The spelling of 79395865793 in words is "seventy-nine billion, three hundred ninety-five million, eight hundred sixty-five thousand, seven hundred ninety-three".