12234566789 has 4 divisors (see below), whose sum is σ = 12312494124. Its totient is φ = 12156639456.

The previous prime is 12234566741. The next prime is 12234566803. The reversal of 12234566789 is 98766543221.

12234566789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3089469889 + 9145096900 = 55583^2 + 95630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12234566789 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 12234566789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12234566389) 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 in 3 ways as a sum of consecutive naturals, for example, 38963432 + ... + 38963745.

It is an arithmetic number, because the mean of its divisors is an integer number (3078123531).

Almost surely, 2^12234566789 is an apocalyptic number.

It is an amenable number.

12234566789 is a deficient number, since it is larger than the sum of its proper divisors (77927335).

12234566789 is an equidigital number, since it uses as much as digits as its factorization.

12234566789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77927334.

The product of its digits is 4354560, while the sum is 53.

The spelling of 12234566789 in words is "twelve billion, two hundred thirty-four million, five hundred sixty-six thousand, seven hundred eighty-nine".