It's a format problem. Since the default format is
General , you change it to scientific notation.
To solve it with that row, and with all the others, it would be convenient:
1 select that full column
2 in the top menu go to
Formato / Celdas
3 in the window that will open select the tab
Número if not already selected
4 then, in
Categoría , select
5 set the
posiciones decimales to
6 make sure that the
Usar separador de miles box is not checked .
7 Finally, click on
Clarifying edition comment :
This problem is due to the format, not the size of the cell.
Here the size of the cell has been enlarged, leaving the format set in
Here we set the format to
Numero , applying what is said above in the answer:
When there is a problem of spatial size, Excel does not convert to scientific notation, but shows
# ... until the size of the column is extended.