What is the most valuable company on earth?

Can you tell me what is currently considered the most valuable company on the planet? Is it a tech giant like Apple or Google, or perhaps a more traditional business like an oil or banking corporation? I'm curious to know which company has managed to accumulate the highest market valuation, and what factors have contributed to its success. Is it innovation, brand recognition, or something else entirely? Additionally, how does this company's valuation compare to other top companies in the world, and what does it signify for the global economy?