It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-444618881104861 is a prime.
It is a congruent number.
Almost surely, 2444618881104861 is an apocalyptic number.
It is an amenable number.
444618881104861 is an equidigital number, since it uses as much as digits as its factorization.
444618881104861 is an evil number, because the sum of its binary digits is even.
The spelling of 444618881104861 in words is "four hundred forty-four trillion, six hundred eighteen billion, eight hundred eighty-one million, one hundred four thousand, eight hundred sixty-one".