217375167368 has 12 divisors (see below), whose sum is σ = 407580911415. Its totient is φ = 108686924328.

The previous prime is 217375167343. The next prime is 217375167397. The reversal of 217375167368 is 863761573712.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 108687583684 + 108687583684 = 329678^2 + 329678^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=329678.

It is a Duffinian 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 2 ways as a sum of consecutive naturals, for example, 1236293 + ... + 1401131.

Almost surely, 2^217375167368 is an apocalyptic number.

It is an amenable number.

217375167368 is a deficient number, since it is larger than the sum of its proper divisors (190205744047).

217375167368 is an frugal number, since it uses more digits than its factorization.

217375167368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329684 (or 164841 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 56.

The spelling of 217375167368 in words is "two hundred seventeen billion, three hundred seventy-five million, one hundred sixty-seven thousand, three hundred sixty-eight".