Maximum N in run command

Dear Lammps users,

I am trying to run a large time scale(microseconds) MD simulation. The elements are Nickel and Titanium.
Since I have to go through a huge amount of time(microseconds) with a small timestep value(0.01ps), N value in run command became large( N=750000000000).

However, I found that when N became large, the simulation outputs an error as following;

ERROR: Invalid run command N value (run.cpp:108)

I experience an error when N is larger than 2000000000. But when N is less then the number, the simulation runs well.

Are there any high limit of N value in run command?

Thank you.
Jeongwoo Lee

I am attaching my code for reference.


Temp change 1

velocity all create 300 4928459 dist gaussian

fix 1 all npt temp 300.0 480.6532 4.00 x 0 0 6 y 0 0 6 z 0 0 6 drag 0.2

variable press1 equal -(c_p[1]+c_p[2]+c_p[3])/(3*vol)

variable sigmazz equal c_p[3]/(20*vol)

variable shearall equal -(c_p[4]+c_p[5]+c_p[6])/(3*vol)

thermo 500
thermo_style custom step temp cella cellb cellc cellalpha cellbeta cellgamma vol press v_press1 v_shearall v_sigmazz atoms pe etotal pxx pyy pzz pxy pxz pyz

timestep 0.01

run 750000000000