813810495959 has 2 divisors, whose sum is σ = 813810495960. Its totient is φ = 813810495958.

The previous prime is 813810495937. The next prime is 813810495991. The reversal of 813810495959 is 959594018318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 813810495959 - 2³² = 809515528663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813810495929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406905247979 + 406905247980.

It is an arithmetic number, because the mean of its divisors is an integer number (406905247980).

Almost surely, 2^813810495959 is an apocalyptic number.

813810495959 is a deficient number, since it is larger than the sum of its proper divisors (1).

813810495959 is an equidigital number, since it uses as much as digits as its factorization.

813810495959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13996800, while the sum is 62.

The spelling of 813810495959 in words is "eight hundred thirteen billion, eight hundred ten million, four hundred ninety-five thousand, nine hundred fifty-nine".