186,378,732,807,587,076,747

Number
$186 \, 378 \, 732 \, 807 \, 587 \, 076 \, 747$ is:


 * $3 \times 2207 \times 39 \, 373 \times 714 \, 947 \, 677 \, 859$


 * The $4$th of $5$ integers which have the property that the sum of any $3$ of them is square: