Well, I was the one who didn't accurately keep track of the many zeros. Yep, if Anavex has $20 billion dollars to go out as dividends, with 100,000,000 outstanding shares, that is only a mere $200 a share.
Instead of tens of millions of dollars, my AVXL holding will be worth only a few million. I'll now have to think for a bit (a few seconds) to see if I need now to liquidate.