16855201853500 has 24 divisors (see below), whose sum is σ = 36811760849136. Its totient is φ = 6742080741200.

The previous prime is 16855201853491. The next prime is 16855201853543. The reversal of 16855201853500 is 535810255861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16855201354 + ... + 16855202353.

It is an arithmetic number, because the mean of its divisors is an integer number (1533823368714).

Almost surely, 2^{16855201853500} is an apocalyptic number.

16855201853500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16855201853500 is an abundant number, since it is smaller than the sum of its proper divisors (19956558995636).

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

16855201853500 is a wasteful number, since it uses less digits than its factorization.

16855201853500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33710403726 (or 33710403714 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 49.

The spelling of 16855201853500 in words is "sixteen trillion, eight hundred fifty-five billion, two hundred one million, eight hundred fifty-three thousand, five hundred".