What is it 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000?

The number you've provided is 1 followed by 84 zeros, which is known as 10^84 or one quindecillion in the short scale used in the United States. It is an extremely large number, far exceeding quantities typically encountered in daily life or even in scientific contexts. Such large numbers are often used in theoretical mathematics, cosmology, or when discussing vast quantities, like atoms in the universe.