216658607271 has 8 divisors (see below), whose sum is σ = 292835378160. Its totient is φ = 142460453952.

The previous prime is 216658607257. The next prime is 216658607339. The reversal of 216658607271 is 172706856612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-216658607271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216658607471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494654136 + ... + 494654573.

It is an arithmetic number, because the mean of its divisors is an integer number (36604422270).

Almost surely, 2^216658607271 is an apocalyptic number.

216658607271 is a deficient number, since it is larger than the sum of its proper divisors (76176770889).

216658607271 is an equidigital number, since it uses as much as digits as its factorization.

216658607271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989308785.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 216658607271 in words is "two hundred sixteen billion, six hundred fifty-eight million, six hundred seven thousand, two hundred seventy-one".