216071571671 has 8 divisors (see below), whose sum is σ = 220327297344. Its totient is φ = 211822472160.

The previous prime is 216071571637. The next prime is 216071571707. The reversal of 216071571671 is 176175170612.

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

It is a cyclic number.

It is not a de Polignac number, because 216071571671 - 2²² = 216067377367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216071571631) 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, 1590656 + ... + 1721141.

It is an arithmetic number, because the mean of its divisors is an integer number (27540912168).

Almost surely, 2^216071571671 is an apocalyptic number.

216071571671 is a deficient number, since it is larger than the sum of its proper divisors (4255725673).

216071571671 is a wasteful number, since it uses less digits than its factorization.

216071571671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313081.

The product of its (nonzero) digits is 123480, while the sum is 44.

The spelling of 216071571671 in words is "two hundred sixteen billion, seventy-one million, five hundred seventy-one thousand, six hundred seventy-one".