159999216 has 160 divisors (see below), whose sum is σ = 467470080. Its totient is φ = 46835712.

The previous prime is 159999187. The next prime is 159999221. The reversal of 159999216 is 612999951.

It is a happy number.

159999216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

159999216 is a nontrivial binomial coefficient, being equal to C(17889, 2).

It is a super-2 number, since 2×159999216² = 51199498241229312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1797700 + ... + 1797788.

It is an arithmetic number, because the mean of its divisors is an integer number (2921688).

Almost surely, 2^159999216 is an apocalyptic number.

159999216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

159999216 is the 17888-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159999216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233735040).

159999216 is an abundant number, since it is smaller than the sum of its proper divisors (307470864).

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

159999216 is a wasteful number, since it uses less digits than its factorization.

159999216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 217 counting only the distinct ones).

The product of its digits is 393660, while the sum is 51.

The square root of 159999216 is about 12649.0796503145. The cubic root of 159999216 is about 542.8826366078.

The spelling of 159999216 in words is "one hundred fifty-nine million, nine hundred ninety-nine thousand, two hundred sixteen".