28068479729 has 2 divisors, whose sum is σ = 28068479730. Its totient is φ = 28068479728.

The previous prime is 28068479723. The next prime is 28068479741. The reversal of 28068479729 is 92797486082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23218750129 + 4849729600 = 152377^2 + 69640^2 .

It is a cyclic number.

It is not a de Polignac number, because 28068479729 - 2⁴ = 28068479713 is a prime.

It is not a weakly prime, because it can be changed into another prime (28068479723) 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, 14034239864 + 14034239865.

It is an arithmetic number, because the mean of its divisors is an integer number (14034239865).

Almost surely, 2^28068479729 is an apocalyptic number.

It is an amenable number.

28068479729 is a deficient number, since it is larger than the sum of its proper divisors (1).

28068479729 is an equidigital number, since it uses as much as digits as its factorization.

28068479729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 28068479729 in words is "twenty-eight billion, sixty-eight million, four hundred seventy-nine thousand, seven hundred twenty-nine".