28171935833 has 2 divisors, whose sum is σ = 28171935834. Its totient is φ = 28171935832.

The previous prime is 28171935811. The next prime is 28171935851. The reversal of 28171935833 is 33853917182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22841183689 + 5330752144 = 151133^2 + 73012^2 .

It is a cyclic number.

It is not a de Polignac number, because 28171935833 - 2¹² = 28171931737 is a prime.

It is not a weakly prime, because it can be changed into another prime (28171935863) 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, 14085967916 + 14085967917.

It is an arithmetic number, because the mean of its divisors is an integer number (14085967917).

Almost surely, 2^28171935833 is an apocalyptic number.

It is an amenable number.

28171935833 is a deficient number, since it is larger than the sum of its proper divisors (1).

28171935833 is an equidigital number, since it uses as much as digits as its factorization.

28171935833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The spelling of 28171935833 in words is "twenty-eight billion, one hundred seventy-one million, nine hundred thirty-five thousand, eight hundred thirty-three".