217132175471 has 2 divisors, whose sum is σ = 217132175472. Its totient is φ = 217132175470.

The previous prime is 217132175443. The next prime is 217132175509. The reversal of 217132175471 is 174571231712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217132175471 - 2²⁶ = 217065066607 is a prime.

It is a super-3 number, since 3×217132175471³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217132175171) by changing a digit.

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 as a sum of consecutive naturals, namely, 108566087735 + 108566087736.

It is an arithmetic number, because the mean of its divisors is an integer number (108566087736).

Almost surely, 2^217132175471 is an apocalyptic number.

217132175471 is a deficient number, since it is larger than the sum of its proper divisors (1).

217132175471 is an equidigital number, since it uses as much as digits as its factorization.

217132175471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 41.

The spelling of 217132175471 in words is "two hundred seventeen billion, one hundred thirty-two million, one hundred seventy-five thousand, four hundred seventy-one".