165655555504 has 20 divisors (see below), whose sum is σ = 324266483464. Its totient is φ = 81973882368.

The previous prime is 165655555501. The next prime is 165655555519. The reversal of 165655555504 is 405555556561.

165655555504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165655555501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53366862 + ... + 53369965.

Almost surely, 2^165655555504 is an apocalyptic number.

It is an amenable number.

165655555504 is a deficient number, since it is larger than the sum of its proper divisors (158610927960).

165655555504 is a wasteful number, since it uses less digits than its factorization.

165655555504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106736932 (or 106736926 counting only the distinct ones).

The product of its (nonzero) digits is 11250000, while the sum is 52.

The spelling of 165655555504 in words is "one hundred sixty-five billion, six hundred fifty-five million, five hundred fifty-five thousand, five hundred four".