165216204178608 has 160 divisors (see below), whose sum is σ = 472225702477824. Its totient is φ = 49354250400000.

The previous prime is 165216204178607. The next prime is 165216204178631. The reversal of 165216204178608 is 806871402612561.

165216204178608 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165216204178607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306795183 + ... + 307333233.

Almost surely, 2^{165216204178608} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165216204178608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236112851238912).

165216204178608 is an abundant number, since it is smaller than the sum of its proper divisors (307009498299216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165216204178608 is a wasteful number, since it uses less digits than its factorization.

165216204178608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546335 (or 546329 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 165216204178608 in words is "one hundred sixty-five trillion, two hundred sixteen billion, two hundred four million, one hundred seventy-eight thousand, six hundred eight".