28444828065 has 16 divisors (see below), whose sum is σ = 47490496128. Its totient is φ = 14510984576.

The previous prime is 28444828033. The next prime is 28444828073. The reversal of 28444828065 is 56082844482.

It is a cyclic number.

It is not a de Polignac number, because 28444828065 - 2⁵ = 28444828033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28444827999 and 28444828017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41224044 + ... + 41224733.

It is an arithmetic number, because the mean of its divisors is an integer number (2968156008).

Almost surely, 2^28444828065 is an apocalyptic number.

It is an amenable number.

28444828065 is a deficient number, since it is larger than the sum of its proper divisors (19045668063).

28444828065 is a wasteful number, since it uses less digits than its factorization.

28444828065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82448808.

The product of its (nonzero) digits is 3932160, while the sum is 51.

The spelling of 28444828065 in words is "twenty-eight billion, four hundred forty-four million, eight hundred twenty-eight thousand, sixty-five".