How do you say Int32.MaxValue and Int64.MaxValue?
Int32.MaxValue = 2147483647
Int64.MaxValue = 9223372036854775807
But how big are they really?

Int32.MaxValue
two billion ,
one hundred forty seven million ,
four hundred eighty three thousand ,
six hundred forty seven
 

Int64.MaxValue
nine quintillion ,
two hundred twenty three quadrillion ,
three hundred seventy two trillion ,
thirty six billion ,
eight hundred fifty four million ,
seven hundred seventy five thousand ,
eight hundred seven

Confirmed at :
www.webmath.com/saynum.html

Update

The nice guys at CoderBlocks podcast mentioned this blog post on one of their episodes

http://www.codingblocks.net/podcast/episode-10-csharp-6-and-roslyn/

 
-- Lee