216039659616 has 288 divisors, whose sum is σ = 680831319168. Its totient is φ = 64433387520.

The previous prime is 216039659609. The next prime is 216039659621. The reversal of 216039659616 is 616956930612.

216039659616 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 39 + 6 + 596 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 182004175 + ... + 182005361.

It is an arithmetic number, because the mean of its divisors is an integer number (2363997636).

Almost surely, 2^216039659616 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 216039659616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340415659584).

216039659616 is an abundant number, since it is smaller than the sum of its proper divisors (464791659552).

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

216039659616 is a wasteful number, since it uses less digits than its factorization.

216039659616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074 (or 2063 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 216039659616 in words is "two hundred sixteen billion, thirty-nine million, six hundred fifty-nine thousand, six hundred sixteen".