isnt the difficulty 7,019,199,231,177.173 right now? not 6,727,225,469,722
You are right. The last difficulty was
6,727,225,469,722. Adjustment happened ~400 blocks ago.
Don't know where this old data came from

And I thought max value of a 32 bit can be 2,147,483,647 where did the 4,294,967,295 come from?
32 bit can represent 2
32 (= 4.294.967.296) different numbers. So from 0 to 4.294.967.295.
2,147,483,647 is the max number if you want to store positive and negative values inside a 32 bit variable.
But the overall amount of values a 32 bit integer can represent is 4.294.967.296