216538127 has 8 divisors (see below), whose sum is σ = 233334864. Its totient is φ = 199761408.

The previous prime is 216538111. The next prime is 216538141. The reversal of 216538127 is 721835612.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 216538127 - 2⁴ = 216538111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216538187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23528 + ... + 31410.

It is an arithmetic number, because the mean of its divisors is an integer number (29166858).

Almost surely, 2^216538127 is an apocalyptic number.

216538127 is a deficient number, since it is larger than the sum of its proper divisors (16796737).

216538127 is a wasteful number, since it uses less digits than its factorization.

216538127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009.

The product of its digits is 20160, while the sum is 35.

The square root of 216538127 is about 14715.2345207272. The cubic root of 216538127 is about 600.4978525312.

The spelling of 216538127 in words is "two hundred sixteen million, five hundred thirty-eight thousand, one hundred twenty-seven".