165533974080 has 112 divisors (see below), whose sum is σ = 526348756800. Its totient is φ = 44077017088.

The previous prime is 165533974031. The next prime is 165533974097. The reversal of 165533974080 is 80479335561.

165533974080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165533974080² (a number of 23 digits) contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 522571 + ... + 777269.

Almost surely, 2^165533974080 is an apocalyptic number.

165533974080 is a gapful number since it is divisible by the number (10) 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 165533974080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263174378400).

165533974080 is an abundant number, since it is smaller than the sum of its proper divisors (360814782720).

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

165533974080 is a wasteful number, since it uses less digits than its factorization.

165533974080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255396 (or 255386 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 165533974080 in words is "one hundred sixty-five billion, five hundred thirty-three million, nine hundred seventy-four thousand, eighty".