216016539 has 8 divisors (see below), whose sum is σ = 289085952. Its totient is φ = 143479080.

The previous prime is 216016517. The next prime is 216016571. The reversal of 216016539 is 935610612.

It is a happy number.

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

It is not a de Polignac number, because 216016539 - 2¹² = 216012443 is a prime.

It is a super-3 number, since 3×216016539³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (216016579) 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, 132039 + ... + 133664.

It is an arithmetic number, because the mean of its divisors is an integer number (36135744).

Almost surely, 2^216016539 is an apocalyptic number.

216016539 is a deficient number, since it is larger than the sum of its proper divisors (73069413).

216016539 is a wasteful number, since it uses less digits than its factorization.

216016539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265977.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 216016539 is about 14697.5011141350. The cubic root of 216016539 is about 600.0153134980.

The spelling of 216016539 in words is "two hundred sixteen million, sixteen thousand, five hundred thirty-nine".