216066510216 has 48 divisors (see below), whose sum is σ = 585531074700. Its totient is φ = 71978977152.

The previous prime is 216066510211. The next prime is 216066510217. The reversal of 216066510216 is 612015660612.

216066510216 is a `hidden beast` number, since 2 + 1 + 60 + 66 + 510 + 21 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 201071528100 + 14994982116 = 448410^2 + 122454^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (216066510211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778851 + ... + 1019186.

Almost surely, 2^216066510216 is an apocalyptic number.

It is an amenable number.

216066510216 is an abundant number, since it is smaller than the sum of its proper divisors (369464564484).

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

216066510216 is a wasteful number, since it uses less digits than its factorization.

216066510216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799718 (or 1799711 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 216066510216 in words is "two hundred sixteen billion, sixty-six million, five hundred ten thousand, two hundred sixteen".