800221293698 has 18 divisors (see below), whose sum is σ = 1215127454697. Its totient is φ = 395238168120.

The previous prime is 800221293673. The next prime is 800221293701. The reversal of 800221293698 is 896392122008.

800221293698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 655019904889 + 145201388809 = 809333^2 + 381053^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=632543.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 104998328 + ... + 105005948.

Almost surely, 2^800221293698 is an apocalyptic number.

800221293698 is a deficient number, since it is larger than the sum of its proper divisors (414906160999).

800221293698 is an frugal number, since it uses more digits than its factorization.

800221293698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15410 (or 7706 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

Multiplying 800221293698 by its sum of digits (50), we get a square (40011064684900 = 6325430²).

The spelling of 800221293698 in words is "eight hundred billion, two hundred twenty-one million, two hundred ninety-three thousand, six hundred ninety-eight".