16635664003 has 12 divisors (see below), whose sum is σ = 19539577200. Its totient is φ = 14120698032.

The previous prime is 16635663971. The next prime is 16635664049. The reversal of 16635664003 is 30046653661.

16635664003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16635664003 - 2⁵ = 16635663971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16635664093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1643028 + ... + 1653121.

It is an arithmetic number, because the mean of its divisors is an integer number (1628298100).

Almost surely, 2^16635664003 is an apocalyptic number.

16635664003 is a deficient number, since it is larger than the sum of its proper divisors (2903913197).

16635664003 is a wasteful number, since it uses less digits than its factorization.

16635664003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296266 (or 3296259 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 16635664003 in words is "sixteen billion, six hundred thirty-five million, six hundred sixty-four thousand, three".