666 5th Ave has 41 floors.
According to R. Allendy, "it is the principle of the individuality, 1, appearing in cosmic mutations, 40. It is the individuality of the being incarnated in the physical life (…). It is the reverse of 14, it shows the principle of the periodic mutations in the cosmic individuality. In the 14, the cycle is in the individual; in 41, the individual is in the cycle".
Represent the "Son, the eternal Word", according to J. Boehme.