28189099513 has 2 divisors, whose sum is σ = 28189099514. Its totient is φ = 28189099512.

The previous prime is 28189099507. The next prime is 28189099531. The reversal of 28189099513 is 31599098182.

Together with next prime (28189099531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23863143529 + 4325955984 = 154477^2 + 65772^2 .

It is a cyclic number.

It is not a de Polignac number, because 28189099513 - 2¹⁷ = 28188968441 is a prime.

It is not a weakly prime, because it can be changed into another prime (28189099553) 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, 14094549756 + 14094549757.

It is an arithmetic number, because the mean of its divisors is an integer number (14094549757).

Almost surely, 2^28189099513 is an apocalyptic number.

It is an amenable number.

28189099513 is a deficient number, since it is larger than the sum of its proper divisors (1).

28189099513 is an equidigital number, since it uses as much as digits as its factorization.

28189099513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 55.

The spelling of 28189099513 in words is "twenty-eight billion, one hundred eighty-nine million, ninety-nine thousand, five hundred thirteen".