Quantos bitcoins existem no mundo?

Inquiring minds want to know: "How many bitcoins actually exist in the world?" This question arises out of the intrigue and fascination surrounding the concept of cryptocurrencies, specifically Bitcoin. As a leading digital currency, Bitcoin has captivated the attention of investors, enthusiasts, and those seeking alternative financial avenues. Understanding the total number of bitcoins in circulation, or the potential cap, is crucial for those interested in its value and future prospects. Can you provide a concise yet comprehensive answer to this inquiry?