The value of an arithmetic expression
\(3 \cdot 4^{8072} - 2 \cdot 16^{512} - 3 \cdot 8^{128 } - 1024\)
written in the number system with base 16. How many significant even digits does this notation contain?
Even digits in hexadecimal: 0, 2, 4, 6, 8, A, C, E.