843 72779673 47 : 9355 3663
Considering the lack of information (e.g.: what type of password, what for, the game, etc.), I tried anything that popped up in my mind. Here's what I tried:
Sums
74 : 40
OR
15 48 11 : 22 18
Now, if we take 74, divide it by the number of digits there is in the left side, 13, we obtain: 6.
Now, if we take 40, divide it by the number of digits there is in the right side, 8, we obtain: 5.
Damn, that was close.
Grouping
2334467777789 : 33355669 => Remove similars => 244777778 : 3556
Properties
Left side: 13 digits, ranging from 2 to 9; 7 is the most repeated digit, and 2, 8 and 9 are singletons.
Right side: 8 digits, ranging from 3 to 9; 3 is the most repeated digit, and 9 is a singleton.
Base conversion
Left side: 843 72779673 47
Base 2: 1111010110001110100111101001100001111110011
Octal: 172616475141763
Hexadecimal: 7AC74F4C3F3
Right side: 9355 3663
Base 2 : 101100100111000001111111111
Octal : 544701777
Hexadecimal : 59383FF
If we stop assuming that there are two parts, one left and one right, then we're left with 21 digits, something that can easily be broken down into groups of 3s or 7s.
843 727 796 734 793 553 663
OR
8437277 9673479 3553663
If we sum these up, we obtain:
15 16 22 14 19 13 15
OR
38 45 31
All of which have no real meaning that I see.
So, to sum it up...what the hell am I supposed to be looking for anyway? This is much too vague.