28123545259 has 2 divisors, whose sum is σ = 28123545260. Its totient is φ = 28123545258.

The previous prime is 28123545253. The next prime is 28123545341. The reversal of 28123545259 is 95254532182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28123545259 - 2²¹ = 28121448107 is a prime.

It is not a weakly prime, because it can be changed into another prime (28123545253) 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 as a sum of consecutive naturals, namely, 14061772629 + 14061772630.

It is an arithmetic number, because the mean of its divisors is an integer number (14061772630).

Almost surely, 2^28123545259 is an apocalyptic number.

28123545259 is a deficient number, since it is larger than the sum of its proper divisors (1).

28123545259 is an equidigital number, since it uses as much as digits as its factorization.

28123545259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864000, while the sum is 46.

The spelling of 28123545259 in words is "twenty-eight billion, one hundred twenty-three million, five hundred forty-five thousand, two hundred fifty-nine".