216180239616 has 216 divisors, whose sum is σ = 684479839680. Its totient is φ = 65074176000.

The previous prime is 216180239599. The next prime is 216180239621. The reversal of 216180239616 is 616932081612.

216180239616 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 8 + 0 + 23 + 9 + 616 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3798700 + ... + 3855188.

Almost surely, 2^216180239616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216180239616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342239919840).

216180239616 is an abundant number, since it is smaller than the sum of its proper divisors (468299600064).

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

216180239616 is a wasteful number, since it uses less digits than its factorization.

216180239616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56673 (or 56656 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 216180239616 in words is "two hundred sixteen billion, one hundred eighty million, two hundred thirty-nine thousand, six hundred sixteen".