28259116723589 has 12 divisors (see below), whose sum is σ = 28484767317888. Its totient is φ = 28035239967000.

The previous prime is 28259116723549. The next prime is 28259116723601. The reversal of 28259116723589 is 98532761195282.

It is a de Polignac number, because none of the positive numbers 2^k-28259116723589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28259116723549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 557892914 + ... + 557943564.

It is an arithmetic number, because the mean of its divisors is an integer number (2373730609824).

Almost surely, 2^{28259116723589} is an apocalyptic number.

It is an amenable number.

28259116723589 is a deficient number, since it is larger than the sum of its proper divisors (225650594299).

28259116723589 is an equidigital number, since it uses as much as digits as its factorization.

28259116723589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85496 (or 85369 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 68.

The spelling of 28259116723589 in words is "twenty-eight trillion, two hundred fifty-nine billion, one hundred sixteen million, seven hundred twenty-three thousand, five hundred eighty-nine".