800885585813 has 4 divisors (see below), whose sum is σ = 800919213708. Its totient is φ = 800851957920.

The previous prime is 800885585789. The next prime is 800885585827. The reversal of 800885585813 is 318585588008.

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

It can be written as a sum of positive squares in 2 ways, for example, as 669898051729 + 130987534084 = 818473^2 + 361922^2 .

It is a cyclic number.

It is not a de Polignac number, because 800885585813 - 2⁸ = 800885585557 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 (800885585873) 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 in 3 ways as a sum of consecutive naturals, for example, 16778198 + ... + 16825863.

It is an arithmetic number, because the mean of its divisors is an integer number (200229803427).

Almost surely, 2^800885585813 is an apocalyptic number.

It is an amenable number.

800885585813 is a deficient number, since it is larger than the sum of its proper divisors (33627895).

800885585813 is a wasteful number, since it uses less digits than its factorization.

800885585813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33627894.

The product of its (nonzero) digits is 12288000, while the sum is 59.

The spelling of 800885585813 in words is "eight hundred billion, eight hundred eighty-five million, five hundred eighty-five thousand, eight hundred thirteen".