12444433123 has 4 divisors (see below), whose sum is σ = 12444695928. Its totient is φ = 12444170320.

The previous prime is 12444433121. The next prime is 12444433129. The reversal of 12444433123 is 32133444421.

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

It is a cyclic number.

It is not a de Polignac number, because 12444433123 - 2¹ = 12444433121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12444433121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38461 + ... + 162382.

It is an arithmetic number, because the mean of its divisors is an integer number (3111173982).

Almost surely, 2^12444433123 is an apocalyptic number.

12444433123 is a deficient number, since it is larger than the sum of its proper divisors (262805).

12444433123 is an equidigital number, since it uses as much as digits as its factorization.

12444433123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262804.

The product of its digits is 27648, while the sum is 31.

Adding to 12444433123 its reverse (32133444421), we get a palindrome (44577877544).

The spelling of 12444433123 in words is "twelve billion, four hundred forty-four million, four hundred thirty-three thousand, one hundred twenty-three".