443216166161 has 8 divisors (see below), whose sum is σ = 446126868480. Its totient is φ = 440309472912.

The previous prime is 443216166149. The next prime is 443216166187. The reversal of 443216166161 is 161661612344.

It is a happy number.

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 443216166161 - 2¹⁴ = 443216149777 is a prime.

It is a super-2 number, since 2×443216166161² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (443216166101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780275 + ... + 1222808.

It is an arithmetic number, because the mean of its divisors is an integer number (55765858560).

Almost surely, 2^443216166161 is an apocalyptic number.

It is an amenable number.

443216166161 is a deficient number, since it is larger than the sum of its proper divisors (2910702319).

443216166161 is a wasteful number, since it uses less digits than its factorization.

443216166161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004535.

The product of its digits is 124416, while the sum is 41.

The spelling of 443216166161 in words is "four hundred forty-three billion, two hundred sixteen million, one hundred sixty-six thousand, one hundred sixty-one".