That character string appears to be hexadecimal. (0-9,a-f, making 16 unique values, 2^4)
Each individual character therefore represents 4 bits of data.
64 characters, therefore, implies it represents 256 bits of data, 2^256.
8 bits of data = a byte, 16 bits of data=word, 32 bits of data =double word. 256 bits=8 double words, or values between 0 and 1.15792e77.
Can't help you with that, Prescription.
Habla englis?