216056632852181 has 16 divisors (see below), whose sum is σ = 246005892979200. Its totient is φ = 187829497582320.

The previous prime is 216056632852103. The next prime is 216056632852187. The reversal of 216056632852181 is 181258236650612.

It is a happy number.

It is not a de Polignac number, because 216056632852181 - 2³⁰ = 216055559110357 is a prime.

It is a super-4 number, since 4×216056632852181⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216056632852187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103132115 + ... + 105206208.

It is an arithmetic number, because the mean of its divisors is an integer number (15375368311200).

Almost surely, 2^{216056632852181} is an apocalyptic number.

It is an amenable number.

216056632852181 is a deficient number, since it is larger than the sum of its proper divisors (29949260127019).

216056632852181 is a wasteful number, since it uses less digits than its factorization.

216056632852181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208342456.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 216056632852181 in words is "two hundred sixteen trillion, fifty-six billion, six hundred thirty-two million, eight hundred fifty-two thousand, one hundred eighty-one".