12143324440 has 32 divisors (see below), whose sum is σ = 29424210480. Its totient is φ = 4483688832.

The previous prime is 12143324407. The next prime is 12143324447. The reversal of 12143324440 is 4442334121.

12143324440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12143324399 and 12143324408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143324447) 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 7 ways as a sum of consecutive naturals, for example, 11675754 + ... + 11676793.

Almost surely, 2^12143324440 is an apocalyptic number.

12143324440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143324440 is an abundant number, since it is smaller than the sum of its proper divisors (17280886040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12143324440 is a wasteful number, since it uses less digits than its factorization.

12143324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23352571 (or 23352567 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 12143324440 its reverse (4442334121), we get a palindrome (16585658561).

The spelling of 12143324440 in words is "twelve billion, one hundred forty-three million, three hundred twenty-four thousand, four hundred forty".