28968559129 has 2 divisors, whose sum is σ = 28968559130. Its totient is φ = 28968559128.

The previous prime is 28968559069. The next prime is 28968559163. The reversal of 28968559129 is 92195586982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17380467225 + 11588091904 = 131835^2 + 107648^2 .

It is a cyclic number.

It is not a de Polignac number, because 28968559129 - 2⁷ = 28968559001 is a prime.

It is not a weakly prime, because it can be changed into another prime (28968559199) 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, 14484279564 + 14484279565.

It is an arithmetic number, because the mean of its divisors is an integer number (14484279565).

Almost surely, 2^28968559129 is an apocalyptic number.

It is an amenable number.

28968559129 is a deficient number, since it is larger than the sum of its proper divisors (1).

28968559129 is an equidigital number, since it uses as much as digits as its factorization.

28968559129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27993600, while the sum is 64.

The spelling of 28968559129 in words is "twenty-eight billion, nine hundred sixty-eight million, five hundred fifty-nine thousand, one hundred twenty-nine".