165042502530541 has 16 divisors (see below), whose sum is σ = 168073902324720. Its totient is φ = 162039845928960.

The previous prime is 165042502530527. The next prime is 165042502530553. The reversal of 165042502530541 is 145035205240561.

It can be written as a sum of positive squares in 8 ways, for example, as 911301253641 + 164131201276900 = 954621^2 + 12811370^2 .

It is a cyclic number.

It is not a de Polignac number, because 165042502530541 - 2²⁵ = 165042468976109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165042502534541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15616911 + ... + 23957731.

It is an arithmetic number, because the mean of its divisors is an integer number (10504618895295).

Almost surely, 2^{165042502530541} is an apocalyptic number.

It is an amenable number.

165042502530541 is a deficient number, since it is larger than the sum of its proper divisors (3031399794179).

165042502530541 is a wasteful number, since it uses less digits than its factorization.

165042502530541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342544.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 165042502530541 in words is "one hundred sixty-five trillion, forty-two billion, five hundred two million, five hundred thirty thousand, five hundred forty-one".