813458866807 has 6 divisors (see below), whose sum is σ = 817120193568. Its totient is φ = 809797661064.

The previous prime is 813458866751. The next prime is 813458866819. The reversal of 813458866807 is 708668854318.

It is not a de Polignac number, because 813458866807 - 2⁷ = 813458866679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813458863807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13438333 + ... + 13498729.

It is an arithmetic number, because the mean of its divisors is an integer number (136186698928).

Almost surely, 2^813458866807 is an apocalyptic number.

813458866807 is a deficient number, since it is larger than the sum of its proper divisors (3661326761).

813458866807 is an frugal number, since it uses more digits than its factorization.

813458866807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121017 (or 60620 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 64.

The spelling of 813458866807 in words is "eight hundred thirteen billion, four hundred fifty-eight million, eight hundred sixty-six thousand, eight hundred seven".