800641928959 has 4 divisors (see below), whose sum is σ = 801646499304. Its totient is φ = 799637358616.

The previous prime is 800641928941. The next prime is 800641929011. The reversal of 800641928959 is 959829146008.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 800641928959 - 2¹⁵ = 800641896191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 800641928897 and 800641928906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800641928059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502283977 + ... + 502285570.

It is an arithmetic number, because the mean of its divisors is an integer number (200411624826).

Almost surely, 2^800641928959 is an apocalyptic number.

800641928959 is a deficient number, since it is larger than the sum of its proper divisors (1004570345).

800641928959 is a wasteful number, since it uses less digits than its factorization.

800641928959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004570344.

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 800641928959 in words is "eight hundred billion, six hundred forty-one million, nine hundred twenty-eight thousand, nine hundred fifty-nine".