12443432112 has 160 divisors (see below), whose sum is σ = 36857640960. Its totient is φ = 4016459520.

The previous prime is 12443432107. The next prime is 12443432119. The reversal of 12443432112 is 21123434421.

12443432112 is a `hidden beast` number, since 1 + 2 + 443 + 4 + 3 + 211 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12443432119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3562687 + ... + 3566177.

It is an arithmetic number, because the mean of its divisors is an integer number (230360256).

Almost surely, 2^12443432112 is an apocalyptic number.

12443432112 is a gapful number since it is divisible by the number (12) 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 12443432112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18428820480).

12443432112 is an abundant number, since it is smaller than the sum of its proper divisors (24414208848).

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

12443432112 is a wasteful number, since it uses less digits than its factorization.

12443432112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768 (or 3756 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 12443432112 its reverse (21123434421), we get a palindrome (33566866533).

The spelling of 12443432112 in words is "twelve billion, four hundred forty-three million, four hundred thirty-two thousand, one hundred twelve".