12020043313440 has 144 divisors (see below), whose sum is σ = 41044090317048. Its totient is φ = 3203337166848.

The previous prime is 12020043313433. The next prime is 12020043313451. The reversal of 12020043313440 is 4431334002021.

12020043313440 is a `hidden beast` number, since 1 + 2 + 0 + 200 + 4 + 3 + 3 + 13 + 440 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3887348516496 + 8132694796944 = 1971636^2 + 2851788^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313737 + ... + 4913096.

Almost surely, 2^{12020043313440} is an apocalyptic number.

12020043313440 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 12020043313440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20522045158524).

12020043313440 is an abundant number, since it is smaller than the sum of its proper divisors (29024047003608).

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

12020043313440 is a wasteful number, since it uses less digits than its factorization.

12020043313440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228451 (or 5228440 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 12020043313440 its reverse (4431334002021), we get a palindrome (16451377315461).

The spelling of 12020043313440 in words is "twelve trillion, twenty billion, forty-three million, three hundred thirteen thousand, four hundred forty".