28285285063 has 4 divisors (see below), whose sum is σ = 32326040080. Its totient is φ = 24244530048.

The previous prime is 28285285051. The next prime is 28285285073. The reversal of 28285285063 is 36058258282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28285285063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28285284998 and 28285285016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285285003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020377498 + ... + 2020377511.

It is an arithmetic number, because the mean of its divisors is an integer number (8081510020).

Almost surely, 2^28285285063 is an apocalyptic number.

28285285063 is a deficient number, since it is larger than the sum of its proper divisors (4040755017).

28285285063 is an equidigital number, since it uses as much as digits as its factorization.

28285285063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040755016.

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 28285285063 in words is "twenty-eight billion, two hundred eighty-five million, two hundred eighty-five thousand, sixty-three".