165045242020432 has 20 divisors (see below), whose sum is σ = 319776285189780. Its totient is φ = 82522329713408.

The previous prime is 165045242020391. The next prime is 165045242020447. The reversal of 165045242020432 is 234020242540561.

It can be written as a sum of positive squares in 2 ways, for example, as 112349315454016 + 52695926566416 = 10599496^2 + 7259196^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13494757 + ... + 22631812.

It is an arithmetic number, because the mean of its divisors is an integer number (15988814259489).

Almost surely, 2^{165045242020432} is an apocalyptic number.

It is an amenable number.

165045242020432 is a deficient number, since it is larger than the sum of its proper divisors (154731043169348).

165045242020432 is a wasteful number, since it uses less digits than its factorization.

165045242020432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36412110 (or 36412104 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

Adding to 165045242020432 its reverse (234020242540561), we get a palindrome (399065484560993).

The spelling of 165045242020432 in words is "one hundred sixty-five trillion, forty-five billion, two hundred forty-two million, twenty thousand, four hundred thirty-two".