$2^{13}$.

The total amount distributed was $2 \times 64 \times 64=2 \times 2^6 \times 2^6=2^{13}$.

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The total amount distributed was $2 \times 64 \times 64=2 \times 2^6 \times 2^6=2^{13}$.

*This problem is taken from the UKMT Mathematical Challenges.*

View the current weekly problem