12143330440 has 64 divisors (see below), whose sum is σ = 28536753600. Its totient is φ = 4645916928.

The previous prime is 12143330393. The next prime is 12143330453. The reversal of 12143330440 is 4403334121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17787 + ... + 156853.

It is an arithmetic number, because the mean of its divisors is an integer number (445886775).

Almost surely, 2^12143330440 is an apocalyptic number.

12143330440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12143330440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14268376800).

12143330440 is an abundant number, since it is smaller than the sum of its proper divisors (16393423160).

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

12143330440 is a wasteful number, since it uses less digits than its factorization.

12143330440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139174 (or 139170 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 12143330440 its reverse (4403334121), we get a palindrome (16546664561).

The spelling of 12143330440 in words is "twelve billion, one hundred forty-three million, three hundred thirty thousand, four hundred forty".