165522843728 has 40 divisors (see below), whose sum is σ = 350081536800. Its totient is φ = 75188960640.

The previous prime is 165522843713. The next prime is 165522843793. The reversal of 165522843728 is 827348225561.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 165522843728.

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, 30950 + ... + 576197.

It is an arithmetic number, because the mean of its divisors is an integer number (8752038420).

Almost surely, 2^165522843728 is an apocalyptic number.

It is an amenable number.

165522843728 is an abundant number, since it is smaller than the sum of its proper divisors (184558693072).

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

165522843728 is a wasteful number, since it uses less digits than its factorization.

165522843728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608715 (or 608709 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 53.

The spelling of 165522843728 in words is "one hundred sixty-five billion, five hundred twenty-two million, eight hundred forty-three thousand, seven hundred twenty-eight".