216016279 has 4 divisors (see below), whose sum is σ = 216270376. Its totient is φ = 215762184.

The previous prime is 216016243. The next prime is 216016289. The reversal of 216016279 is 972610612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216016279 - 2¹³ = 216008087 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 (216016289) 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 3 ways as a sum of consecutive naturals, for example, 125769 + ... + 127474.

It is an arithmetic number, because the mean of its divisors is an integer number (54067594).

Almost surely, 2^216016279 is an apocalyptic number.

216016279 is a deficient number, since it is larger than the sum of its proper divisors (254097).

216016279 is an equidigital number, since it uses as much as digits as its factorization.

216016279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254096.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 216016279 is about 14697.4922690913. The cubic root of 216016279 is about 600.0150727695.

The spelling of 216016279 in words is "two hundred sixteen million, sixteen thousand, two hundred seventy-nine".