28056442159 has 2 divisors, whose sum is σ = 28056442160. Its totient is φ = 28056442158.

The previous prime is 28056442111. The next prime is 28056442189. The reversal of 28056442159 is 95124465082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28056442159 - 2¹⁹ = 28055917871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28056442189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14028221079 + 14028221080.

It is an arithmetic number, because the mean of its divisors is an integer number (14028221080).

Almost surely, 2^28056442159 is an apocalyptic number.

28056442159 is a deficient number, since it is larger than the sum of its proper divisors (1).

28056442159 is an equidigital number, since it uses as much as digits as its factorization.

28056442159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 28056442159 in words is "twenty-eight billion, fifty-six million, four hundred forty-two thousand, one hundred fifty-nine".