28545865142239 has 2 divisors, whose sum is σ = 28545865142240. Its totient is φ = 28545865142238.

The previous prime is 28545865142219. The next prime is 28545865142261. The reversal of 28545865142239 is 93224156854582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28545865142239 - 2⁹ = 28545865141727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28545865142219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14272932571119 + 14272932571120.

It is an arithmetic number, because the mean of its divisors is an integer number (14272932571120).

Almost surely, 2^{28545865142239} is an apocalyptic number.

28545865142239 is a deficient number, since it is larger than the sum of its proper divisors (1).

28545865142239 is an equidigital number, since it uses as much as digits as its factorization.

28545865142239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888000, while the sum is 64.

The spelling of 28545865142239 in words is "twenty-eight trillion, five hundred forty-five billion, eight hundred sixty-five million, one hundred forty-two thousand, two hundred thirty-nine".