28320816079 has 2 divisors, whose sum is σ = 28320816080. Its totient is φ = 28320816078.

The previous prime is 28320816077. The next prime is 28320816089. The reversal of 28320816079 is 97061802382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28320816079 - 2¹ = 28320816077 is a prime.

Together with 28320816077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28320816077) 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, 14160408039 + 14160408040.

It is an arithmetic number, because the mean of its divisors is an integer number (14160408040).

Almost surely, 2^28320816079 is an apocalyptic number.

28320816079 is a deficient number, since it is larger than the sum of its proper divisors (1).

28320816079 is an equidigital number, since it uses as much as digits as its factorization.

28320816079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 28320816079 in words is "twenty-eight billion, three hundred twenty million, eight hundred sixteen thousand, seventy-nine".