16855801944 has 32 divisors (see below), whose sum is σ = 42142950000. Its totient is φ = 5618141312.

The previous prime is 16855801927. The next prime is 16855801997. The reversal of 16855801944 is 44910855861.

It is a happy number.

16855801944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 404182 + ... + 443930.

Almost surely, 2^16855801944 is an apocalyptic number.

It is an amenable number.

16855801944 is an abundant number, since it is smaller than the sum of its proper divisors (25287148056).

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

16855801944 is a wasteful number, since it uses less digits than its factorization.

16855801944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57427 (or 57423 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 16855801944 in words is "sixteen billion, eight hundred fifty-five million, eight hundred one thousand, nine hundred forty-four".