Get the gold, use a few flakes from one of the gold bars to fill a hula hoop with salt, spend the other trillions of dollars on normal rich villain shit.
This reminds me of that scene in one of the Pirates of the Carribbean movies where Davey Jones has to stand in a bucket of water to go on land for a meeting.
Plot twist, you have to keep the hula hoop up or the demon can get you, because dropping the hoop would inevitably create a break in the salt somewhere.