[ikt]

This is a financial discussion though so:

https://www.worldometers.info/gdp/gdp-by-country/

World's GDP is $80,934,771,028,340 (nominal, 2017).

https://www.wolframalpha.com/input/?i=%2480%2C934%2C771%2C02...

$80.93477102834 trillion

Nobody would argue world GDP is anything billion, that's crazy.

[selectodude]

https://fr.wikipedia.org/wiki/Liste_des_pays_par_PIB_nominal

In France, they use milliard and billion.