216516435 has 8 divisors (see below), whose sum is σ = 346426320. Its totient is φ = 115475424.

The previous prime is 216516409. The next prime is 216516439. The reversal of 216516435 is 534615612.

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

It is not a de Polignac number, because 216516435 - 2²⁰ = 215467859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216516396 and 216516405.

It is not an unprimeable number, because it can be changed into a prime (216516439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7217200 + ... + 7217229.

It is an arithmetic number, because the mean of its divisors is an integer number (43303290).

Almost surely, 2^216516435 is an apocalyptic number.

216516435 is a deficient number, since it is larger than the sum of its proper divisors (129909885).

216516435 is a wasteful number, since it uses less digits than its factorization.

216516435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14434437.

The product of its digits is 21600, while the sum is 33.

The square root of 216516435 is about 14714.4974429982. The cubic root of 216516435 is about 600.4777999665.

The spelling of 216516435 in words is "two hundred sixteen million, five hundred sixteen thousand, four hundred thirty-five".