28321075087 has 2 divisors, whose sum is σ = 28321075088. Its totient is φ = 28321075086.

The previous prime is 28321075073. The next prime is 28321075099. The reversal of 28321075087 is 78057012382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28321075087 - 2¹⁹ = 28320550799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28321075037) 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, 14160537543 + 14160537544.

It is an arithmetic number, because the mean of its divisors is an integer number (14160537544).

Almost surely, 2^28321075087 is an apocalyptic number.

28321075087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28321075087 is an equidigital number, since it uses as much as digits as its factorization.

28321075087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 28321075087 in words is "twenty-eight billion, three hundred twenty-one million, seventy-five thousand, eighty-seven".