216552940166 has 8 divisors (see below), whose sum is σ = 324836442840. Its totient is φ = 108274125888.

The previous prime is 216552940151. The next prime is 216552940333. The reversal of 216552940166 is 661049255612.

216552940166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×216552940166² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216552940166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054256 + ... + 1242803.

It is an arithmetic number, because the mean of its divisors is an integer number (40604555355).

Almost surely, 2^216552940166 is an apocalyptic number.

216552940166 is a deficient number, since it is larger than the sum of its proper divisors (108283502674).

216552940166 is a wasteful number, since it uses less digits than its factorization.

216552940166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344198.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 216552940166 in words is "two hundred sixteen billion, five hundred fifty-two million, nine hundred forty thousand, one hundred sixty-six".