A Gangnam Style video posted on the officialpsy YouTube channel has proven so popular, YouTube has been forced to upgrade its viewing counter from 32- to 64-bit, as the company explained in a Google+ post.

We never thought a video would be watched in numbers greater than a 32-bit integer (=2,147,483,647 views), but that was before we met PSY. “Gangnam Style” has been viewed so many times we have to upgrade!

At the time of writing, the video was showing around 5 million views above the old limit. YouTube has marked the achievement by creating a little mouse-over animation on the number.

If you want to see which video might be next in line to break the old viewing limit, Google Trends now shows the most popular videos of the day.

YouTube also recently allowed channel owners to create custom URLs to match their channel names, after a number of popular ones rebranded as they expanded their content or chose a new focus.