Biggest single query in Google?

What's the biggest number(number of results) that Google returns when a single query is searched?

I searched for : +a*******

Number of results: 13,670,000,000 for +a*******. (0.23 seconds)
It's around 13.67 billion

So, you can have a go at it and comment me if you've the biggest number.
Lets find which search retrieves it :-)