Of course, with great power comes great responsibility!
Can you imagine having 48 million people read every single thing you tweet? Having 48 million people looking at that pic you posted of your lunch?
It would certainly make you think twice before you type, that's for sure.
When Katy was walking the red carpet for the American Music Awards, she was asked how she feels about having such an insane number of Twitter followers.
Her answer? "It's terrifying!"
Katy also theorized about why so many people might be interested in following her and we think her theory is right on the money.
Watch the video above to hear what she said.
Do you follow Katy on Twitter?