165560606111361 has 16 divisors (see below), whose sum is σ = 222104838979584. Its totient is φ = 109695074138064.

The previous prime is 165560606111279. The next prime is 165560606111363. The reversal of 165560606111361 is 163111606065561.

It is not a de Polignac number, because 165560606111361 - 2¹¹ = 165560606109313 is a prime.

It is a super-2 number, since 2×165560606111361² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165560606111361.

It is not an unprimeable number, because it can be changed into a prime (165560606111363) 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 15 ways as a sum of consecutive naturals, for example, 33444160 + ... + 38074046.

It is an arithmetic number, because the mean of its divisors is an integer number (13881552436224).

Almost surely, 2^{165560606111361} is an apocalyptic number.

It is an amenable number.

165560606111361 is a deficient number, since it is larger than the sum of its proper divisors (56544232868223).

165560606111361 is a wasteful number, since it uses less digits than its factorization.

165560606111361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703180.

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 165560606111361 in words is "one hundred sixty-five trillion, five hundred sixty billion, six hundred six million, one hundred eleven thousand, three hundred sixty-one".