28639035853 has 2 divisors, whose sum is σ = 28639035854. Its totient is φ = 28639035852.

The previous prime is 28639035793. The next prime is 28639035917. The reversal of 28639035853 is 35853093682.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15937295049 + 12701740804 = 126243^2 + 112702^2 .

It is a cyclic number.

It is not a de Polignac number, because 28639035853 - 2¹⁷ = 28638904781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28639035853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28639035353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14319517926 + 14319517927.

It is an arithmetic number, because the mean of its divisors is an integer number (14319517927).

Almost surely, 2^28639035853 is an apocalyptic number.

It is an amenable number.

28639035853 is a deficient number, since it is larger than the sum of its proper divisors (1).

28639035853 is an equidigital number, since it uses as much as digits as its factorization.

28639035853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 28639035853 in words is "twenty-eight billion, six hundred thirty-nine million, thirty-five thousand, eight hundred fifty-three".