Well done to Nick who provided the wanted details, summarised as follows:
The aircraft was the Dornier Do-X. It had 12 engines. On one flight, the plane took off carrying 169 people consisting of 150 passengers, 10 crew and 9 stowaways.
Anything interesting fact is that despite all those engines, they regularly overheated, and the aircraft often had difficulty getting much above 250 feet AGL... ouch!