216680601081667 has 8 divisors (see below), whose sum is σ = 228245127772160. Its totient is φ = 205132102844040.

The previous prime is 216680601081643. The next prime is 216680601081677. The reversal of 216680601081667 is 766180106086612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216680601081667 is a prime.

It is a super-2 number, since 2×216680601081667² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216680601081677) 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, 4007085459 + ... + 4007139532.

It is an arithmetic number, because the mean of its divisors is an integer number (28530640971520).

Almost surely, 2^{216680601081667} is an apocalyptic number.

216680601081667 is a deficient number, since it is larger than the sum of its proper divisors (11564526690493).

216680601081667 is a wasteful number, since it uses less digits than its factorization.

216680601081667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8014226433.

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 216680601081667 in words is "two hundred sixteen trillion, six hundred eighty billion, six hundred one million, eighty-one thousand, six hundred sixty-seven".