16889865321 has 24 divisors (see below), whose sum is σ = 27099861120. Its totient is φ = 9318544032.

The previous prime is 16889865271. The next prime is 16889865361. The reversal of 16889865321 is 12356898861.

It is not a de Polignac number, because 16889865321 - 2⁷ = 16889865193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16889865361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1976721 + ... + 1985246.

It is an arithmetic number, because the mean of its divisors is an integer number (1129160880).

Almost surely, 2^16889865321 is an apocalyptic number.

It is an amenable number.

16889865321 is a deficient number, since it is larger than the sum of its proper divisors (10209995799).

16889865321 is a wasteful number, since it uses less digits than its factorization.

16889865321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962013 (or 3962006 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 57.

The spelling of 16889865321 in words is "sixteen billion, eight hundred eighty-nine million, eight hundred sixty-five thousand, three hundred twenty-one".