813793924877 has 2 divisors, whose sum is σ = 813793924878. Its totient is φ = 813793924876.

The previous prime is 813793924871. The next prime is 813793924901. The reversal of 813793924877 is 778429397318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 812547199396 + 1246725481 = 901414^2 + 35309^2 .

It is a cyclic number.

It is not a de Polignac number, because 813793924877 - 2⁶ = 813793924813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813793924871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406896962438 + 406896962439.

It is an arithmetic number, because the mean of its divisors is an integer number (406896962439).

Almost surely, 2^813793924877 is an apocalyptic number.

It is an amenable number.

813793924877 is a deficient number, since it is larger than the sum of its proper divisors (1).

813793924877 is an equidigital number, since it uses as much as digits as its factorization.

813793924877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128024064, while the sum is 68.

The spelling of 813793924877 in words is "eight hundred thirteen billion, seven hundred ninety-three million, nine hundred twenty-four thousand, eight hundred seventy-seven".