28033043566 has 12 divisors (see below), whose sum is σ = 46219770576. Its totient is φ = 12742292420.

The previous prime is 28033043561. The next prime is 28033043567. The reversal of 28033043566 is 66534033082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28033043561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57919270 + ... + 57919753.

It is an arithmetic number, because the mean of its divisors is an integer number (3851647548).

Almost surely, 2^28033043566 is an apocalyptic number.

28033043566 is a deficient number, since it is larger than the sum of its proper divisors (18186727010).

28033043566 is a wasteful number, since it uses less digits than its factorization.

28033043566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115839047 (or 115839036 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 28033043566 in words is "twenty-eight billion, thirty-three million, forty-three thousand, five hundred sixty-six".