165383605216 has 48 divisors (see below), whose sum is σ = 334778070816. Its totient is φ = 80365671936.

The previous prime is 165383605199. The next prime is 165383605241. The reversal of 165383605216 is 612506383561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971470 + ... + 1128946.

It is an arithmetic number, because the mean of its divisors is an integer number (6974543142).

Almost surely, 2^165383605216 is an apocalyptic number.

165383605216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165383605216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167389035408).

165383605216 is an abundant number, since it is smaller than the sum of its proper divisors (169394465600).

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

165383605216 is a wasteful number, since it uses less digits than its factorization.

165383605216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158411 (or 158403 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

Adding to 165383605216 its reverse (612506383561), we get a palindrome (777889988777).

The spelling of 165383605216 in words is "one hundred sixty-five billion, three hundred eighty-three million, six hundred five thousand, two hundred sixteen".