165331355600113 has 4 divisors (see below), whose sum is σ = 165361301513188. Its totient is φ = 165301409687040.

The previous prime is 165331355600111. The next prime is 165331355600119. The reversal of 165331355600113 is 311006553133561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31679652027024 + 133651703573089 = 5628468^2 + 11560783^2 .

It is a cyclic number.

It is not a de Polignac number, because 165331355600113 - 2¹ = 165331355600111 is a prime.

It is a super-2 number, since 2×165331355600113² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165331355600113.

It is not an unprimeable number, because it can be changed into a prime (165331355600111) 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 3 ways as a sum of consecutive naturals, for example, 14972948256 + ... + 14972959297.

It is an arithmetic number, because the mean of its divisors is an integer number (41340325378297).

Almost surely, 2^{165331355600113} is an apocalyptic number.

It is an amenable number.

165331355600113 is a deficient number, since it is larger than the sum of its proper divisors (29945913075).

165331355600113 is an equidigital number, since it uses as much as digits as its factorization.

165331355600113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29945913074.

The product of its (nonzero) digits is 364500, while the sum is 43.

The spelling of 165331355600113 in words is "one hundred sixty-five trillion, three hundred thirty-one billion, three hundred fifty-five million, six hundred thousand, one hundred thirteen".