800840841873 has 4 divisors (see below), whose sum is σ = 1067787789168. Its totient is φ = 533893894580.

The previous prime is 800840841859. The next prime is 800840841887. The reversal of 800840841873 is 378148048008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (800840841859) and next prime (800840841887).

It is a cyclic number.

It is not a de Polignac number, because 800840841873 - 2³³ = 792250907281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (800840841173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133473473643 + ... + 133473473648.

It is an arithmetic number, because the mean of its divisors is an integer number (266946947292).

Almost surely, 2^800840841873 is an apocalyptic number.

It is an amenable number.

800840841873 is a deficient number, since it is larger than the sum of its proper divisors (266946947295).

800840841873 is a wasteful number, since it uses less digits than its factorization.

800840841873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266946947294.

The product of its (nonzero) digits is 1376256, while the sum is 51.

The spelling of 800840841873 in words is "eight hundred billion, eight hundred forty million, eight hundred forty-one thousand, eight hundred seventy-three".