It is a congruent number.
It is an unprimeable number.
Almost surely, 250555500500800 is an apocalyptic number.
50555500500800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 50555500500800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66545993521920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
50555500500800 is a wasteful number, since it uses less digits than its factorization.
50555500500800 is an odious number, because the sum of its binary digits is odd.
The spelling of 50555500500800 in words is "fifty trillion, five hundred fifty-five billion, five hundred million, five hundred thousand, eight hundred".