813495763447 has 2 divisors, whose sum is σ = 813495763448. Its totient is φ = 813495763446.

The previous prime is 813495763441. The next prime is 813495763501. The reversal of 813495763447 is 744367594318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 813495763447 - 2⁷ = 813495763319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813495763441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406747881723 + 406747881724.

It is an arithmetic number, because the mean of its divisors is an integer number (406747881724).

Almost surely, 2^813495763447 is an apocalyptic number.

813495763447 is a deficient number, since it is larger than the sum of its proper divisors (1).

813495763447 is an equidigital number, since it uses as much as digits as its factorization.

813495763447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 61.

The spelling of 813495763447 in words is "eight hundred thirteen billion, four hundred ninety-five million, seven hundred sixty-three thousand, four hundred forty-seven".