216108160 has 32 divisors (see below), whose sum is σ = 516635100. Its totient is φ = 86443008.

The previous prime is 216108121. The next prime is 216108173. The reversal of 216108160 is 61801612.

It can be written as a sum of positive squares in 2 ways, for example, as 212693056 + 3415104 = 14584^2 + 1848^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168195 + ... + 169474.

Almost surely, 2^216108160 is an apocalyptic number.

216108160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216108160 is an abundant number, since it is smaller than the sum of its proper divisors (300526940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216108160 is an equidigital number, since it uses as much as digits as its factorization.

216108160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337688 (or 337676 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 216108160 is about 14700.6176740979. The cubic root of 216108160 is about 600.1001314367.

Adding to 216108160 its reverse (61801612), we get a palindrome (277909772).

The spelling of 216108160 in words is "two hundred sixteen million, one hundred eight thousand, one hundred sixty".