217161163875587 has 2 divisors, whose sum is σ = 217161163875588. Its totient is φ = 217161163875586.

The previous prime is 217161163875571. The next prime is 217161163875589. The reversal of 217161163875587 is 785578361161712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 217161163875587 - 2⁴ = 217161163875571 is a prime.

Together with 217161163875589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (217161163875589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108580581937793 + 108580581937794.

It is an arithmetic number, because the mean of its divisors is an integer number (108580581937794).

Almost surely, 2^{217161163875587} is an apocalyptic number.

217161163875587 is a deficient number, since it is larger than the sum of its proper divisors (1).

217161163875587 is an equidigital number, since it uses as much as digits as its factorization.

217161163875587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 118540800, while the sum is 68.

The spelling of 217161163875587 in words is "two hundred seventeen trillion, one hundred sixty-one billion, one hundred sixty-three million, eight hundred seventy-five thousand, five hundred eighty-seven".