165655345011 has 32 divisors (see below), whose sum is σ = 252063840000. Its totient is φ = 95928167808.

The previous prime is 165655344977. The next prime is 165655345013. The reversal of 165655345011 is 110543556561.

It is not a de Polignac number, because 165655345011 - 2¹⁵ = 165655312243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165655345013) 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 31 ways as a sum of consecutive naturals, for example, 639781 + ... + 860598.

It is an arithmetic number, because the mean of its divisors is an integer number (7876995000).

Almost surely, 2^165655345011 is an apocalyptic number.

165655345011 is a deficient number, since it is larger than the sum of its proper divisors (86408494989).

165655345011 is a wasteful number, since it uses less digits than its factorization.

165655345011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500563.

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 165655345011 in words is "one hundred sixty-five billion, six hundred fifty-five million, three hundred forty-five thousand, eleven".