28159823329 has 32 divisors (see below), whose sum is σ = 31491323136. Its totient is φ = 24967249920.

The previous prime is 28159823317. The next prime is 28159823353. The reversal of 28159823329 is 92332895182.

It is a cyclic number.

It is not a de Polignac number, because 28159823329 - 2²⁹ = 27622952417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28159823429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28244059 + ... + 28245055.

It is an arithmetic number, because the mean of its divisors is an integer number (984103848).

Almost surely, 2^28159823329 is an apocalyptic number.

It is an amenable number.

28159823329 is a deficient number, since it is larger than the sum of its proper divisors (3331499807).

28159823329 is a wasteful number, since it uses less digits than its factorization.

28159823329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465.

The product of its digits is 1866240, while the sum is 52.

The spelling of 28159823329 in words is "twenty-eight billion, one hundred fifty-nine million, eight hundred twenty-three thousand, three hundred twenty-nine".