A quadrillion is a very large number. In fact, it’s so large that it’s hard to wrap your head around. A quadrillion is one followed by fifteen zeros.
That’s a 1 with 15 zeros after it. To put that into perspective, the number of grains of sand on all the beaches in the world is estimated to be around seven quintillion. So a quadrillion is 1,000 times larger than that.
The sun is thought to be around 4.6 billion years old. So a quadrillion seconds would be around three times the age of the universe. As you can see, a quadrillion is an extremely large number.
And yet, in the grand scheme of things, it’s actually quite small. There are numbers that are far, far larger than a quadrillion. But that’s another story for another day.