79658466485813 has 2 divisors, whose sum is σ = 79658466485814. Its totient is φ = 79658466485812.

The previous prime is 79658466485687. The next prime is 79658466485833. The reversal of 79658466485813 is 31858466485697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55528384317169 + 24130082168644 = 7451737^2 + 4912238^2 .

It is a cyclic number.

It is not a de Polignac number, because 79658466485813 - 2²² = 79658462291509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79658466485833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39829233242906 + 39829233242907.

It is an arithmetic number, because the mean of its divisors is an integer number (39829233242907).

Almost surely, 2^{79658466485813} is an apocalyptic number.

It is an amenable number.

79658466485813 is a deficient number, since it is larger than the sum of its proper divisors (1).

79658466485813 is an equidigital number, since it uses as much as digits as its factorization.

79658466485813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8360755200, while the sum is 80.

The spelling of 79658466485813 in words is "seventy-nine trillion, six hundred fifty-eight billion, four hundred sixty-six million, four hundred eighty-five thousand, eight hundred thirteen".