How would we calculate the relative resources of a Trillionaire?

A trillion dollars is 5 million times the median American household's net worth.

1,000,000,000,000/192,900=5,184,033.178

But the spending power of a trillion dollars must be even more, since the median household has to do things like pay all the various taxes which the trillionaire won't have to. And the median household loses out on the free wealth that trillionaires get from their preferred interest rates, etc.

So how do we make sense of what this kind of wealth is really worth? I feel like the answer is that the spending power of a trillion simply tends toward infinity, but please tell me I'm wrong.