216161105 has 16 divisors (see below), whose sum is σ = 263177040. Its totient is φ = 170422272.

The previous prime is 216161059. The next prime is 216161111. The reversal of 216161105 is 501161612.

216161105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 394384 + 215766721 = 628^2 + 14689^2 .

It is a cyclic number.

It is not a de Polignac number, because 216161105 - 2¹² = 216157009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133541 + ... + 135149.

It is an arithmetic number, because the mean of its divisors is an integer number (16448565).

Almost surely, 2^216161105 is an apocalyptic number.

It is an amenable number.

216161105 is a deficient number, since it is larger than the sum of its proper divisors (47015935).

216161105 is a wasteful number, since it uses less digits than its factorization.

216161105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 216161105 is about 14702.4183384911. The cubic root of 216161105 is about 600.1491342249.

The spelling of 216161105 in words is "two hundred sixteen million, one hundred sixty-one thousand, one hundred five".