100000000000000000
"n-gon"
100000000000000000 + 3 = 100000000000000003
100000000000000000 add 273456999999999994444448888888888888 = 273456999999999976009662514381979648
Login 5000000000000000 times or get 100000000000000000 place visits, which is impossible.
five
100000000000000000
200,000,000 * 500,000,000 = 100000000000000000
100000000000000000 × 1234567890 = 123456789000000000000000000
Numbers
500000000000000000
One quintillion.