Octillionaire - Someone who has so much money, they could throw a party and

Someone who has so much money, they could throw a party and invite every person who ever existed, and still have enough left to throw another party.

I’m so rich, my goldfish is an octillionaire.

My uncle is an octillionaire. He bought a planet for his cat.

I just became an octillionaire. My goldfish asked me to buy a spaceship.