663558903216 has 60 divisors (see below), whose sum is σ = 2025865444200. Its totient is φ = 201078455040.

The previous prime is 663558903199. The next prime is 663558903233. The reversal of 663558903216 is 612309855366.

It is a happy number.

663558903216 is a `hidden beast` number, since 6 + 6 + 35 + 589 + 0 + 3 + 21 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (663558903199) and next prime (663558903233).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209455141 + ... + 209458308.

It is an arithmetic number, because the mean of its divisors is an integer number (33764424070).

Almost surely, 2^663558903216 is an apocalyptic number.

663558903216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

663558903216 is an abundant number, since it is smaller than the sum of its proper divisors (1362306540984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663558903216 is a wasteful number, since it uses less digits than its factorization.

663558903216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418913474 (or 418913465 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 663558903216 in words is "six hundred sixty-three billion, five hundred fifty-eight million, nine hundred three thousand, two hundred sixteen".