16185027855844 has 9 divisors (see below), whose sum is σ = 28323812828451. Its totient is φ = 8092509904860.

The previous prime is 16185027855781. The next prime is 16185027855847. The reversal of 16185027855844 is 44855872058161.

The square root of 16185027855844 is 4023062.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16185027855847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7040359 + ... + 9051889.

Almost surely, 2^{16185027855844} is an apocalyptic number.

16185027855844 is the 4023062-nd square number.

It is an amenable number.

16185027855844 is a deficient number, since it is larger than the sum of its proper divisors (12138784972607).

16185027855844 is an frugal number, since it uses more digits than its factorization.

16185027855844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023066 (or 2011533 counting only the distinct ones).

The product of its (nonzero) digits is 86016000, while the sum is 64.

The spelling of 16185027855844 in words is "sixteen trillion, one hundred eighty-five billion, twenty-seven million, eight hundred fifty-five thousand, eight hundred forty-four".