28368680809 has 16 divisors (see below), whose sum is σ = 33297848320. Its totient is φ = 23662815120.

The previous prime is 28368680779. The next prime is 28368680833. The reversal of 28368680809 is 90808686382.

It is not a de Polignac number, because 28368680809 - 2⁹ = 28368680297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28368680869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92319 + ... + 255460.

It is an arithmetic number, because the mean of its divisors is an integer number (2081115520).

Almost surely, 2^28368680809 is an apocalyptic number.

It is an amenable number.

28368680809 is a deficient number, since it is larger than the sum of its proper divisors (4929167511).

28368680809 is a wasteful number, since it uses less digits than its factorization.

28368680809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348100.

The product of its (nonzero) digits is 7962624, while the sum is 58.

The spelling of 28368680809 in words is "twenty-eight billion, three hundred sixty-eight million, six hundred eighty thousand, eight hundred nine".