SpaceX's IPO at $1.8 trillion valuation makes Elon Musk, already the world's richest man, the world's first trillionaire.
To put this in perspective, a trillion dollars is an equivalent to about $27 million per day for a century, or 2.2 billion pounds in one-dollar bills that would require 10,000 SpaceX Starship flights to put into orbit.
Before the IPO, Musk was worth an estimated $813 billion, a fortune more than twice as large as the planet's second-richest person, Google co-founder Larry Page, who is worth an estimated $288 billion. Nonetheless, there's a caveat: while Musk's wealth is at least on paper, he could fall below the trillionaire threshold if the stock sinks.
The question now isn't whether Musk is the richest person on the planet, it's how far his wealth will climb from here.