216044361 has 48 divisors (see below), whose sum is σ = 350481600. Its totient is φ = 131459328.

The previous prime is 216044351. The next prime is 216044417. The reversal of 216044361 is 163440612.

216044361 is a `hidden beast` number, since 2 + 160 + 443 + 61 = 666.

It is not a de Polignac number, because 216044361 - 2⁷ = 216044233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (216044351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 515410 + ... + 515828.

It is an arithmetic number, because the mean of its divisors is an integer number (7301700).

Almost surely, 2^216044361 is an apocalyptic number.

It is an amenable number.

216044361 is a deficient number, since it is larger than the sum of its proper divisors (134437239).

216044361 is a wasteful number, since it uses less digits than its factorization.

216044361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 216044361 is about 14698.4475710872. The cubic root of 216044361 is about 600.0410721884.

Adding to 216044361 its reverse (163440612), we get a palindrome (379484973).

The spelling of 216044361 in words is "two hundred sixteen million, forty-four thousand, three hundred sixty-one".