28318701673 has 2 divisors, whose sum is σ = 28318701674. Its totient is φ = 28318701672.

The previous prime is 28318701667. The next prime is 28318701683. The reversal of 28318701673 is 37610781382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16473209104 + 11845492569 = 128348^2 + 108837^2 .

It is a cyclic number.

It is not a de Polignac number, because 28318701673 - 2⁹ = 28318701161 is a prime.

It is not a weakly prime, because it can be changed into another prime (28318701683) 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, 14159350836 + 14159350837.

It is an arithmetic number, because the mean of its divisors is an integer number (14159350837).

Almost surely, 2^28318701673 is an apocalyptic number.

It is an amenable number.

28318701673 is a deficient number, since it is larger than the sum of its proper divisors (1).

28318701673 is an equidigital number, since it uses as much as digits as its factorization.

28318701673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 28318701673 in words is "twenty-eight billion, three hundred eighteen million, seven hundred one thousand, six hundred seventy-three".