15436464*544645+55465

To calculate \( 15436464 \times 544645 + 55465 \), first, we perform the multiplication:

\[ 15436464 \times 544645 = 8406827115180 \]

Then, we add \( 55465 \):

\[ 8406827115180 + 55465 = 8406827115645 \]

Therefore, the final result is:

\[ \boxed{8406827115645} \]