28321075843 has 2 divisors, whose sum is σ = 28321075844. Its totient is φ = 28321075842.

The previous prime is 28321075831. The next prime is 28321075847. The reversal of 28321075843 is 34857012382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28321075843 - 2⁹ = 28321075331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28321075843.

It is not a weakly prime, because it can be changed into another prime (28321075847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14160537921 + 14160537922.

It is an arithmetic number, because the mean of its divisors is an integer number (14160537922).

Almost surely, 2^28321075843 is an apocalyptic number.

28321075843 is a deficient number, since it is larger than the sum of its proper divisors (1).

28321075843 is an equidigital number, since it uses as much as digits as its factorization.

28321075843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 28321075843 in words is "twenty-eight billion, three hundred twenty-one million, seventy-five thousand, eight hundred forty-three".