12432004440 has 64 divisors (see below), whose sum is σ = 38304027360. Its totient is φ = 3225600000.

The previous prime is 12432004439. The next prime is 12432004447. The reversal of 12432004440 is 4440023421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12432004440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432004447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395561 + ... + 1404440.

Almost surely, 2^12432004440 is an apocalyptic number.

12432004440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12432004440 is an abundant number, since it is smaller than the sum of its proper divisors (25872022920).

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

12432004440 is a wasteful number, since it uses less digits than its factorization.

12432004440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800052 (or 2800048 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 12432004440 its reverse (4440023421), we get a palindrome (16872027861).

The spelling of 12432004440 in words is "twelve billion, four hundred thirty-two million, four thousand, four hundred forty".