Write 1627780792186652.19750406945 in scientific notation.

$$ 1627780792186652.19750406945 = 1.6277807921867\cdot 10^{15} $$

Step 1: Move the decimal point from its current position (the black dot) to a position immediately to the right of the first nonzero digit (the red dot).

1.627780792186652.19750406945

Step 2: We moved the decimal point 15 spaces to the right. Therefore, the exponent on base 10 will be positive 15.Now we know that the:

Mantissa = 1.62778079218665219750406945

Exponent = 15

So, the solution is:

$$1627780792186652.19750406945 = \color{blue}{ 1.62778079218665219750406945} \cdot 10^{ \color{red}{ 15 }}$$

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