12444147725771 has 2 divisors, whose sum is σ = 12444147725772. Its totient is φ = 12444147725770.

The previous prime is 12444147725761. The next prime is 12444147725791. The reversal of 12444147725771 is 17752774144421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12444147725771 is a prime.

It is not a weakly prime, because it can be changed into another prime (12444147725741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6222073862885 + 6222073862886.

It is an arithmetic number, because the mean of its divisors is an integer number (6222073862886).

Almost surely, 2^{12444147725771} is an apocalyptic number.

12444147725771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12444147725771 is an equidigital number, since it uses as much as digits as its factorization.

12444147725771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12293120, while the sum is 56.

The spelling of 12444147725771 in words is "twelve trillion, four hundred forty-four billion, one hundred forty-seven million, seven hundred twenty-five thousand, seven hundred seventy-one".