663166032016 has 20 divisors (see below), whose sum is σ = 1302485342572. Its totient is φ = 327040782336.

The previous prime is 663166032007. The next prime is 663166032037. The reversal of 663166032016 is 610230661366.

It can be written as a sum of positive squares in 2 ways, for example, as 363633120400 + 299532911616 = 603020^2 + 547296^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 663166032016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283888401 + ... + 283890736.

Almost surely, 2^663166032016 is an apocalyptic number.

It is an amenable number.

663166032016 is a deficient number, since it is larger than the sum of its proper divisors (639319310556).

663166032016 is a wasteful number, since it uses less digits than its factorization.

663166032016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567779218 (or 567779212 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 663166032016 in words is "six hundred sixty-three billion, one hundred sixty-six million, thirty-two thousand, sixteen".