216244590208 has 64 divisors (see below), whose sum is σ = 442742960520. Its totient is φ = 105128755200.

The previous prime is 216244590193. The next prime is 216244590217. The reversal of 216244590208 is 802095442612.

It can be written as a sum of positive squares in 4 ways, for example, as 143556116544 + 72688473664 = 378888^2 + 269608^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7340308 + ... + 7369708.

Almost surely, 2^216244590208 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 216244590208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221371480260).

216244590208 is an abundant number, since it is smaller than the sum of its proper divisors (226498370312).

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

216244590208 is a wasteful number, since it uses less digits than its factorization.

216244590208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31005 (or 30993 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 216244590208 in words is "two hundred sixteen billion, two hundred forty-four million, five hundred ninety thousand, two hundred eight".