16663443366 has 32 divisors (see below), whose sum is σ = 33622138368. Its totient is φ = 5505463040.

The previous prime is 16663443359. The next prime is 16663443371. The reversal of 16663443366 is 66334436661.

It is a super-3 number, since 3×16663443366³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

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, 330151 + ... + 377261.

It is an arithmetic number, because the mean of its divisors is an integer number (1050691824).

Almost surely, 2^16663443366 is an apocalyptic number.

16663443366 is an abundant number, since it is smaller than the sum of its proper divisors (16958695002).

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

16663443366 is a wasteful number, since it uses less digits than its factorization.

16663443366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47636.

The product of its digits is 3359232, while the sum is 48.

The spelling of 16663443366 in words is "sixteen billion, six hundred sixty-three million, four hundred forty-three thousand, three hundred sixty-six".