Probably longer than your lifetime. Most of the numbers between one and one billion are long and challenging to pronounce. When you start counting the larger numbers like 482,051,341, you will likely start to slow down. If you allow just three seconds to say each number, which is probably faster than most people can count, and you take no breaks at all, it will take you three billion seconds to finish counting. How many years is that? More than 95 years! Here’s how you arrive at that figure: three billion seconds divided by 60 (seconds per minute) = 50,000,000 minutes; 50,000,000 minutes divided by 60 (minutes per hour) = 833,333.333 hours; 833,333.333 hours divided by 24 (hours per day) = 34,722.22 days; 34,722.22 days divided by 365 (days per year) = 95.1 years.