'0' is a special number.

It is neither positive nor negative.

Most importantly, it is a real number.

Aryabhata, a great astronomer of the classic age was the one who invented the digit '0' but later on Brahmagupta, another Indian astronomer and mathematician Was the one who clearly defines 'zero'.

'0' was called 'Sunya' in India, 'Sifr' in the middle east, 'Zefero' in Italy and later in English it was called 'Zero'.

Just imagine the world without '0'.

Even though '0' means nothing but without it there would be no algebra, no accounts, no quantity to measure, no millions or billions and most importantly no computers.