Good at abstractions bad with numbers Ever since I had an interest in math I was aware that what I'm good at and what really pulled me was the abstract thinking. My intuition for even the simplest number related concepts (modulo arithmetic, simple combinatorics) is realy weak yet from what I learned so far I really like (and am good at) is topology and abstract aspects of analysis and geometry. 
I really like math and so my question is whether my limitations in "number intuition" is a real obstacle or is there a chance for people like me to overcome their weaknesses and shine with their strengths?

I'll let you into a "dirty secret":

MANY (and perhaps most) mathematicians rely heavily on calculators and computers to do any necessary arithmetic or extensive computation.

I think those who are good with numbers but "bad" at abstraction have far more to worry about if they plan to pursue serious mathematics.
As we cross the threshold from the more concrete to the more abstract in mathematics, we inevitably do less in terms of concrete calculations than what we once spent an extraordinary amount of time on, and so it is not at all uncommon to get rusty with some of those skills: time and practice will sharpen those skills, or, when needed, there's the calculator to help out.
