12440424440000 has 140 divisors (see below), whose sum is σ = 30856601982888. Its totient is φ = 4974816000000.

The previous prime is 12440424439951. The next prime is 12440424440009. The reversal of 12440424440000 is 4442404421.

It is not an unprimeable number, because it can be changed into a prime (12440424440009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 153999620 + ... + 154080380.

Almost surely, 2^{12440424440000} is an apocalyptic number.

12440424440000 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 12440424440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15428300991444).

12440424440000 is an abundant number, since it is smaller than the sum of its proper divisors (18416177542888).

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

12440424440000 is an frugal number, since it uses more digits than its factorization.

12440424440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84644 (or 84619 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 12440424440000 its reverse (4442404421), we get a palindrome (12444866844421).

The spelling of 12440424440000 in words is "twelve trillion, four hundred forty billion, four hundred twenty-four million, four hundred forty thousand".