216435513 has 16 divisors (see below), whose sum is σ = 330080256. Its totient is φ = 123574800.

The previous prime is 216435481. The next prime is 216435529. The reversal of 216435513 is 315534612.

It is not a de Polignac number, because 216435513 - 2⁵ = 216435481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216435563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26920 + ... + 34022.

It is an arithmetic number, because the mean of its divisors is an integer number (20630016).

Almost surely, 2^216435513 is an apocalyptic number.

It is an amenable number.

216435513 is a deficient number, since it is larger than the sum of its proper divisors (113644743).

216435513 is a wasteful number, since it uses less digits than its factorization.

216435513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8564.

The product of its digits is 10800, while the sum is 30.

The square root of 216435513 is about 14711.7474488927. The cubic root of 216435513 is about 600.4029820596.

Subtracting 216435513 from its reverse (315534612), we obtain a palindrome (99099099).

The spelling of 216435513 in words is "two hundred sixteen million, four hundred thirty-five thousand, five hundred thirteen".