217116702211355 has 64 divisors (see below), whose sum is σ = 288488291143680. Its totient is φ = 156027342772224.

The previous prime is 217116702211327. The next prime is 217116702211369. The reversal of 217116702211355 is 553112207611712.

It is a cyclic number.

It is not a de Polignac number, because 217116702211355 - 2⁸ = 217116702211099 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5141634752 + ... + 5141676978.

It is an arithmetic number, because the mean of its divisors is an integer number (4507629549120).

Almost surely, 2^{217116702211355} is an apocalyptic number.

217116702211355 is a deficient number, since it is larger than the sum of its proper divisors (71371588932325).

217116702211355 is a wasteful number, since it uses less digits than its factorization.

217116702211355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47948.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 217116702211355 in words is "two hundred seventeen trillion, one hundred sixteen billion, seven hundred two million, two hundred eleven thousand, three hundred fifty-five".