28865765635853 has 2 divisors, whose sum is σ = 28865765635854. Its totient is φ = 28865765635852.

The previous prime is 28865765635829. The next prime is 28865765635873. The reversal of 28865765635853 is 35853656756882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22089125808649 + 6776639827204 = 4699907^2 + 2603198^2 .

It is a cyclic number.

It is not a de Polignac number, because 28865765635853 - 2⁶ = 28865765635789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28865765635873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14432882817926 + 14432882817927.

It is an arithmetic number, because the mean of its divisors is an integer number (14432882817927).

Almost surely, 2^{28865765635853} is an apocalyptic number.

It is an amenable number.

28865765635853 is a deficient number, since it is larger than the sum of its proper divisors (1).

28865765635853 is an equidigital number, since it uses as much as digits as its factorization.

28865765635853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120000, while the sum is 77.

The spelling of 28865765635853 in words is "twenty-eight trillion, eight hundred sixty-five billion, seven hundred sixty-five million, six hundred thirty-five thousand, eight hundred fifty-three".