It is a plaindrome in base 10.
It is an unprimeable number.
Almost surely, 244444455555556 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
44444455555556 is a wasteful number, since it uses less digits than its factorization.
44444455555556 is an evil number, because the sum of its binary digits is even.
The spelling of 44444455555556 in words is "forty-four trillion, four hundred forty-four billion, four hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-six".