40) 16²⋅4³⋅8⁴ =

40)

$$16^2 \cdot 4^3 \cdot 8^4 = (2^4)^2 \cdot (2^2)^3 \cdot (2^3)^4 = 2^8 \cdot 2^6 \cdot 2^{12} = 2^{26} = 67108864$$

Ответ: 67108864