12844331442 has 24 divisors (see below), whose sum is σ = 27831704940. Its totient is φ = 4281086880.

The previous prime is 12844331431. The next prime is 12844331443. The reversal of 12844331442 is 24413344821.

12844331442 is a `hidden beast` number, since 1 + 2 + 84 + 433 + 144 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12483369441 + 360962001 = 111729^2 + 18999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12844331397 and 12844331406.

It is not an unprimeable number, because it can be changed into a prime (12844331443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278484 + ... + 321312.

Almost surely, 2^12844331442 is an apocalyptic number.

12844331442 is an abundant number, since it is smaller than the sum of its proper divisors (14987373498).

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

12844331442 is a wasteful number, since it uses less digits than its factorization.

12844331442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59498 (or 59495 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The spelling of 12844331442 in words is "twelve billion, eight hundred forty-four million, three hundred thirty-one thousand, four hundred forty-two".