809306798128 has 10 divisors (see below), whose sum is σ = 1568031921404. Its totient is φ = 404653399056.

The previous prime is 809306798051. The next prime is 809306798177. The reversal of 809306798128 is 821897603908.

809306798128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25290837426 + ... + 25290837457.

Almost surely, 2^809306798128 is an apocalyptic number.

It is an amenable number.

809306798128 is a deficient number, since it is larger than the sum of its proper divisors (758725123276).

809306798128 is a wasteful number, since it uses less digits than its factorization.

809306798128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50581674891 (or 50581674885 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 809306798128 in words is "eight hundred nine billion, three hundred six million, seven hundred ninety-eight thousand, one hundred twenty-eight".