The GCD of given numbers is 666660000.
Step 1 : Find prime factorization of each number.
$$\begin{aligned}4666620000 =& 2\cdot2\cdot2\cdot2\cdot2\cdot3\cdot5\cdot5\cdot5\cdot5\cdot7\cdot41\cdot271\\[8pt]6666600000 =& 2\cdot2\cdot2\cdot2\cdot2\cdot2\cdot3\cdot5\cdot5\cdot5\cdot5\cdot5\cdot41\cdot271\\[8pt]\end{aligned}$$(view steps on how to factor 4666620000 and 6666600000. )
Step 2 : Put a box around factors that are common for all numbers:
$$\begin{aligned}4666620000 =& \color{blue}{\boxed{2}}\cdot\color{red}{\boxed{2}}\cdot\color{Fuchsia}{\boxed{2}}\cdot\color{Orange}{\boxed{2}}\cdot\color{Purple}{\boxed{2}}\cdot\color{blue}{\boxed{3}}\cdot\color{red}{\boxed{5}}\cdot\color{Fuchsia}{\boxed{5}}\cdot\color{Orange}{\boxed{5}}\cdot\color{Purple}{\boxed{5}}\cdot7\cdot\color{blue}{\boxed{41}}\cdot\color{red}{\boxed{271}}\\[8pt]6666600000 =& \color{blue}{\boxed{2}}\cdot\color{red}{\boxed{2}}\cdot\color{Fuchsia}{\boxed{2}}\cdot\color{Orange}{\boxed{2}}\cdot\color{Purple}{\boxed{2}}\cdot2\cdot\color{blue}{\boxed{3}}\cdot\color{red}{\boxed{5}}\cdot\color{Fuchsia}{\boxed{5}}\cdot\color{Orange}{\boxed{5}}\cdot\color{Purple}{\boxed{5}}\cdot5\cdot\color{blue}{\boxed{41}}\cdot\color{red}{\boxed{271}}\\[8pt]\end{aligned}$$Step 3 : Multiply the boxed numbers together:
$$ GCD = 2\cdot2\cdot2\cdot2\cdot2\cdot3\cdot5\cdot5\cdot5\cdot5\cdot41\cdot271 = 666660000 $$This solution can be visualized using a Venn diagram.
The GCD equals the product of the numbers at the intersection.