16940864663 has 16 divisors (see below), whose sum is σ = 17942256000. Its totient is φ = 15969015552.

The previous prime is 16940864651. The next prime is 16940864687. The reversal of 16940864663 is 36646804961.

It is a happy number.

16940864663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16940864663 - 2³² = 12645897367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16940864623) 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 15 ways as a sum of consecutive naturals, for example, 542273 + ... + 572661.

It is an arithmetic number, because the mean of its divisors is an integer number (1121391000).

Almost surely, 2^16940864663 is an apocalyptic number.

16940864663 is a deficient number, since it is larger than the sum of its proper divisors (1001391337).

16940864663 is a wasteful number, since it uses less digits than its factorization.

16940864663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30874.

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 16940864663 in words is "sixteen billion, nine hundred forty million, eight hundred sixty-four thousand, six hundred sixty-three".