817202846813 has 2 divisors, whose sum is σ = 817202846814. Its totient is φ = 817202846812.

The previous prime is 817202846767. The next prime is 817202846843. The reversal of 817202846813 is 318648202718.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766722643129 + 50480203684 = 875627^2 + 224678^2 .

It is a cyclic number.

It is not a de Polignac number, because 817202846813 - 2⁶ = 817202846749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (817202846843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408601423406 + 408601423407.

It is an arithmetic number, because the mean of its divisors is an integer number (408601423407).

Almost surely, 2^817202846813 is an apocalyptic number.

It is an amenable number.

817202846813 is a deficient number, since it is larger than the sum of its proper divisors (1).

817202846813 is an equidigital number, since it uses as much as digits as its factorization.

817202846813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The spelling of 817202846813 in words is "eight hundred seventeen billion, two hundred two million, eight hundred forty-six thousand, eight hundred thirteen".