28532080566 has 96 divisors (see below), whose sum is σ = 70636250880. Its totient is φ = 8239070400.

The previous prime is 28532080559. The next prime is 28532080601. The reversal of 28532080566 is 66508023582.

28532080566 is a `hidden beast` number, since 2 + 8 + 5 + 3 + 2 + 0 + 80 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1213381 + ... + 1236671.

It is an arithmetic number, because the mean of its divisors is an integer number (735794280).

Almost surely, 2^28532080566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28532080566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35318125440).

28532080566 is an abundant number, since it is smaller than the sum of its proper divisors (42104170314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28532080566 is a wasteful number, since it uses less digits than its factorization.

28532080566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23602 (or 23599 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 28532080566 in words is "twenty-eight billion, five hundred thirty-two million, eighty thousand, five hundred sixty-six".