805817340393 has 32 divisors (see below), whose sum is σ = 1190379939840. Its totient is φ = 481716188160.

The previous prime is 805817340353. The next prime is 805817340403. The reversal of 805817340393 is 393043718508.

It is not a de Polignac number, because 805817340393 - 2⁸ = 805817340137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (805817340353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708873 + ... + 1454006.

It is an arithmetic number, because the mean of its divisors is an integer number (37199373120).

Almost surely, 2^805817340393 is an apocalyptic number.

It is an amenable number.

805817340393 is a deficient number, since it is larger than the sum of its proper divisors (384562599447).

805817340393 is a wasteful number, since it uses less digits than its factorization.

805817340393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163169.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 805817340393 in words is "eight hundred five billion, eight hundred seventeen million, three hundred forty thousand, three hundred ninety-three".