16855171903 has 8 divisors (see below), whose sum is σ = 17726496768. Its totient is φ = 15995388024.

The previous prime is 16855171901. The next prime is 16855171937. The reversal of 16855171903 is 30917155861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16855171903 - 2¹ = 16855171901 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 (16855171901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2882251 + ... + 2888092.

It is an arithmetic number, because the mean of its divisors is an integer number (2215812096).

Almost surely, 2^16855171903 is an apocalyptic number.

16855171903 is a deficient number, since it is larger than the sum of its proper divisors (871324865).

16855171903 is a wasteful number, since it uses less digits than its factorization.

16855171903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770493.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 16855171903 in words is "sixteen billion, eight hundred fifty-five million, one hundred seventy-one thousand, nine hundred three".