217384610068 has 24 divisors (see below), whose sum is σ = 403079447232. Its totient is φ = 102227896704.

The previous prime is 217384610057. The next prime is 217384610071. The reversal of 217384610068 is 860016483712.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006246 + ... + 1203037.

It is an arithmetic number, because the mean of its divisors is an integer number (16794976968).

Almost surely, 2^217384610068 is an apocalyptic number.

It is an amenable number.

217384610068 is a deficient number, since it is larger than the sum of its proper divisors (185694837164).

217384610068 is a wasteful number, since it uses less digits than its factorization.

217384610068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210751 (or 2210749 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 217384610068 in words is "two hundred seventeen billion, three hundred eighty-four million, six hundred ten thousand, sixty-eight".