Since it is improbable to multiply 16777216 times itself 2073600 times, you need a calculator. The site calculator says: $${{\mathtt{16\,777\,216}}}^{{\mathtt{2\,073\,600}}} \approx \infty$$, because the numbers are so large. Most calculators will tell infinite and that is the closest answer that you can rationally recieve and record.