Create a table, insert 232-1, 232, 263-1, 263, 264-1 and 264 and select the inserted values and datatypes:
create table t (
o integer primary key,
n integer
);
insert into t(o, n) values (1, 4294967295);
insert into t(o, n) values (2, 4294967296);
insert into t(o, n) values (3, 9223372036854775807);
insert into t(o, n) values (4, 9223372036854775808);
insert into t(o, n) values (5, 18446744073709551615);
insert into t(o, n) values (6, 18446744073709551616);
select
typeof(n),
n
from
t
order by
o;
integer|4294967295
integer|4294967296
integer|9223372036854775807
real|9.22337203685478e+18
real|1.84467440737096e+19
real|1.84467440737096e+19