Aaah another update, it turns out that i was wrong in my calculations... the real ammount of all the possible combinations is the factorial of 26 (1*2*3...*26) squared.

This thing is getting annoying really, but i think that i will stick with this answer: the possible ammount of words in the english language is

620,448,401,733,239,439,369,000 according to William Walsh...

The world's population is about 6,363,657,000 people. Now say that every person in the world wrote 40 pages a day with 40 words on the page, thus daily 10181851200000 words would be recorded and defined. Taking that and multiplying that by 365.25 days a year we get 3718921150800000 words recorded by the world's population this year, now from some research i've done i found out that the world's population is growing at the rate of 1.4 percent annualy. So going from there saying that our annual birth rate will go keep steady, it will take us some 166,821,000 years to write down all possible transpositions of the english alphabet...

THE END

Comments are welcome.