813797753393 has 2 divisors, whose sum is σ = 813797753394. Its totient is φ = 813797753392.

The previous prime is 813797753369. The next prime is 813797753459. The reversal of 813797753393 is 393357797318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 805027056289 + 8770697104 = 897233^2 + 93652^2 .

It is a cyclic number.

It is not a de Polignac number, because 813797753393 - 2⁸ = 813797753137 is a prime.

It is not a weakly prime, because it can be changed into another prime (813797753333) 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, 406898876696 + 406898876697.

It is an arithmetic number, because the mean of its divisors is an integer number (406898876697).

Almost surely, 2^813797753393 is an apocalyptic number.

It is an amenable number.

813797753393 is a deficient number, since it is larger than the sum of its proper divisors (1).

813797753393 is an equidigital number, since it uses as much as digits as its factorization.

813797753393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90016920, while the sum is 65.

The spelling of 813797753393 in words is "eight hundred thirteen billion, seven hundred ninety-seven million, seven hundred fifty-three thousand, three hundred ninety-three".