217118106164 has 12 divisors (see below), whose sum is σ = 379963229184. Its totient is φ = 108557183544.

The previous prime is 217118106059. The next prime is 217118106199. The reversal of 217118106164 is 461601811712.

217118106164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187454 + ... + 685109.

It is an arithmetic number, because the mean of its divisors is an integer number (31663602432).

Almost surely, 2^217118106164 is an apocalyptic number.

It is an amenable number.

217118106164 is a deficient number, since it is larger than the sum of its proper divisors (162845123020).

217118106164 is a wasteful number, since it uses less digits than its factorization.

217118106164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934774 (or 934772 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

Adding to 217118106164 its reverse (461601811712), we get a palindrome (678719917876).

The spelling of 217118106164 in words is "two hundred seventeen billion, one hundred eighteen million, one hundred six thousand, one hundred sixty-four".