165500655006501 has 24 divisors (see below), whose sum is σ = 239508833578560. Its totient is φ = 110125085112000.

The previous prime is 165500655006451. The next prime is 165500655006503. The reversal of 165500655006501 is 105600556005561.

It is not a de Polignac number, because 165500655006501 - 2³⁵ = 165466295268133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165500655006503) 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 23 ways as a sum of consecutive naturals, for example, 20266830 + ... + 27235008.

It is an arithmetic number, because the mean of its divisors is an integer number (9979534732440).

Almost surely, 2^{165500655006501} is an apocalyptic number.

It is an amenable number.

165500655006501 is a deficient number, since it is larger than the sum of its proper divisors (74008178572059).

165500655006501 is a wasteful number, since it uses less digits than its factorization.

165500655006501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973177 (or 6973174 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 165500655006501 in words is "one hundred sixty-five trillion, five hundred billion, six hundred fifty-five million, six thousand, five hundred one".