28566669882 has 16 divisors (see below), whose sum is σ = 60494124672. Its totient is φ = 8962092480.

The previous prime is 28566669881. The next prime is 28566669893. The reversal of 28566669882 is 28896666582.

It is not an unprimeable number, because it can be changed into a prime (28566669881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140032594 + ... + 140032797.

It is an arithmetic number, because the mean of its divisors is an integer number (3780882792).

Almost surely, 2^28566669882 is an apocalyptic number.

28566669882 is an abundant number, since it is smaller than the sum of its proper divisors (31927454790).

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

28566669882 is a wasteful number, since it uses less digits than its factorization.

28566669882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280065413.

The product of its digits is 119439360, while the sum is 66.

The spelling of 28566669882 in words is "twenty-eight billion, five hundred sixty-six million, six hundred sixty-nine thousand, eight hundred eighty-two".