213163188688 has 20 divisors (see below), whose sum is σ = 413057909700. Its totient is φ = 106567599104.

The previous prime is 213163188619. The next prime is 213163188709. The reversal of 213163188688 is 886881361312.

213163188688 is digitally balanced in base 3, 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 2 ways, for example, as 84606520384 + 128556668304 = 290872^2 + 358548^2 .

It is a super-2 number, since 2×213163188688² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 748495 + ... + 993262.

It is an arithmetic number, because the mean of its divisors is an integer number (20652895485).

Almost surely, 2^213163188688 is an apocalyptic number.

It is an amenable number.

213163188688 is a deficient number, since it is larger than the sum of its proper divisors (199894721012).

213163188688 is a wasteful number, since it uses less digits than its factorization.

213163188688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749414 (or 1749408 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 55.

The spelling of 213163188688 in words is "two hundred thirteen billion, one hundred sixty-three million, one hundred eighty-eight thousand, six hundred eighty-eight".