The sum of $4 + 55555555555$ is:

$4 + 55555555555 = 55555555559$

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Here are some related questions:

1. What is $4 \times 55555555555$?
2. How do you add large numbers quickly?
3. What is the sum of $55555555555 + 44444444444$?
4. How do you perform operations on numbers in scientific notation?
5. What are some methods to estimate sums of large numbers?

Tip: To add large numbers more efficiently, you can break them down into manageable parts (e.g., add the smaller parts and then combine them).