12444243204139 has 2 divisors, whose sum is σ = 12444243204140. Its totient is φ = 12444243204138.

The previous prime is 12444243203993. The next prime is 12444243204161. The reversal of 12444243204139 is 93140234244421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12444243204139 - 2²¹ = 12444241106987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12444243204095 and 12444243204104.

It is not a weakly prime, because it can be changed into another prime (12444243234139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6222121602069 + 6222121602070.

It is an arithmetic number, because the mean of its divisors is an integer number (6222121602070).

Almost surely, 2^{12444243204139} is an apocalyptic number.

12444243204139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12444243204139 is an equidigital number, since it uses as much as digits as its factorization.

12444243204139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 12444243204139 in words is "twelve trillion, four hundred forty-four billion, two hundred forty-three million, two hundred four thousand, one hundred thirty-nine".