216119985 has 8 divisors (see below), whose sum is σ = 345792000. Its totient is φ = 115263984.

The previous prime is 216119971. The next prime is 216119989. The reversal of 216119985 is 589911612.

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

It is not a de Polignac number, because 216119985 - 2⁶ = 216119921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216119989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7203985 + ... + 7204014.

It is an arithmetic number, because the mean of its divisors is an integer number (43224000).

Almost surely, 2^216119985 is an apocalyptic number.

It is an amenable number.

216119985 is a deficient number, since it is larger than the sum of its proper divisors (129672015).

216119985 is a wasteful number, since it uses less digits than its factorization.

216119985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14408007.

The product of its digits is 38880, while the sum is 42.

The square root of 216119985 is about 14701.0198625810. The cubic root of 216119985 is about 600.1110766576. Note that the first 3 decimals are identical.

The spelling of 216119985 in words is "two hundred sixteen million, one hundred nineteen thousand, nine hundred eighty-five".