165545531453436 has 24 divisors (see below), whose sum is σ = 386435411169360. Its totient is φ = 55158628897152.

The previous prime is 165545531453377. The next prime is 165545531453437. The reversal of 165545531453436 is 634354135545561.

165545531453436 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 165545531453436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165545531453437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2901835371 + ... + 2901892418.

It is an arithmetic number, because the mean of its divisors is an integer number (16101475465390).

Almost surely, 2^{165545531453436} is an apocalyptic number.

It is an amenable number.

165545531453436 is an abundant number, since it is smaller than the sum of its proper divisors (220889879715924).

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

165545531453436 is a wasteful number, since it uses less digits than its factorization.

165545531453436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803730173 (or 5803730171 counting only the distinct ones).

The product of its digits is 194400000, while the sum is 60.

Adding to 165545531453436 its reverse (634354135545561), we get a palindrome (799899666998997).

The spelling of 165545531453436 in words is "one hundred sixty-five trillion, five hundred forty-five billion, five hundred thirty-one million, four hundred fifty-three thousand, four hundred thirty-six".