79653047500813 has 2 divisors, whose sum is σ = 79653047500814. Its totient is φ = 79653047500812.

The previous prime is 79653047500799. The next prime is 79653047500847. The reversal of 79653047500813 is 31800574035697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58677407773924 + 20975639726889 = 7660118^2 + 4579917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79653047500813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79603047500813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39826523750406 + 39826523750407.

It is an arithmetic number, because the mean of its divisors is an integer number (39826523750407).

Almost surely, 2^{79653047500813} is an apocalyptic number.

It is an amenable number.

79653047500813 is a deficient number, since it is larger than the sum of its proper divisors (1).

79653047500813 is an equidigital number, since it uses as much as digits as its factorization.

79653047500813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 79653047500813 in words is "seventy-nine trillion, six hundred fifty-three billion, forty-seven million, five hundred thousand, eight hundred thirteen".