165003443000 has 128 divisors (see below), whose sum is σ = 421822814400. Its totient is φ = 59913792000.

The previous prime is 165003442999. The next prime is 165003443021. The reversal of 165003443000 is 344300561.

165003443000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165003443000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7788422 + ... + 7809578.

Almost surely, 2^165003443000 is an apocalyptic number.

165003443000 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 165003443000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210911407200).

165003443000 is an abundant number, since it is smaller than the sum of its proper divisors (256819371400).

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

165003443000 is a wasteful number, since it uses less digits than its factorization.

165003443000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21898 (or 21884 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 165003443000 its reverse (344300561), we get a palindrome (165347743561).

The spelling of 165003443000 in words is "one hundred sixty-five billion, three million, four hundred forty-three thousand".