228666852589 has 12 divisors (see below), whose sum is σ = 266510803068. Its totient is φ = 195623937600.

The previous prime is 228666852569. The next prime is 228666852599. The reversal of 228666852589 is 985258666822.

It can be written as a sum of positive squares in 2 ways, for example, as 41796531364 + 186870321225 = 204442^2 + 432285^2 .

It is not a de Polignac number, because 228666852589 - 2⁷ = 228666852461 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 (228666852529) 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, 4453042 + ... + 4504099.

It is an arithmetic number, because the mean of its divisors is an integer number (22209233589).

Almost surely, 2^228666852589 is an apocalyptic number.

It is an amenable number.

228666852589 is a deficient number, since it is larger than the sum of its proper divisors (37843950479).

228666852589 is an equidigital number, since it uses as much as digits as its factorization.

228666852589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957676 (or 8957669 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 67.

The spelling of 228666852589 in words is "two hundred twenty-eight billion, six hundred sixty-six million, eight hundred fifty-two thousand, five hundred eighty-nine".