165161650616 has 8 divisors (see below), whose sum is σ = 309678094920. Its totient is φ = 82580825304.

The previous prime is 165161650603. The next prime is 165161650651. The reversal of 165161650616 is 616056161561.

165161650616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10322603156 + ... + 10322603171.

It is an arithmetic number, because the mean of its divisors is an integer number (38709761865).

Almost surely, 2^165161650616 is an apocalyptic number.

It is an amenable number.

165161650616 is a deficient number, since it is larger than the sum of its proper divisors (144516444304).

165161650616 is a wasteful number, since it uses less digits than its factorization.

165161650616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20645206333 (or 20645206329 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 165161650616 in words is "one hundred sixty-five billion, one hundred sixty-one million, six hundred fifty thousand, six hundred sixteen".