663938038954 has 32 divisors (see below), whose sum is σ = 1059956162496. Its totient is φ = 310825693440.

The previous prime is 663938038943. The next prime is 663938038961. The reversal of 663938038954 is 459830839366.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5398264 + ... + 5519884.

It is an arithmetic number, because the mean of its divisors is an integer number (33123630078).

Almost surely, 2^663938038954 is an apocalyptic number.

663938038954 is a deficient number, since it is larger than the sum of its proper divisors (396018123542).

663938038954 is a wasteful number, since it uses less digits than its factorization.

663938038954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122470.

The product of its (nonzero) digits is 100776960, while the sum is 64.

The spelling of 663938038954 in words is "six hundred sixty-three billion, nine hundred thirty-eight million, thirty-eight thousand, nine hundred fifty-four".