165155610512 has 20 divisors (see below), whose sum is σ = 320411725596. Its totient is φ = 82468713600.

The previous prime is 165155610511. The next prime is 165155610527. The reversal of 165155610512 is 215016551561.

It can be written as a sum of positive squares in 2 ways, for example, as 130453881856 + 34701728656 = 361184^2 + 186284^2 .

It is not an unprimeable number, because it can be changed into a prime (165155610511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6805739 + ... + 6829962.

Almost surely, 2^165155610512 is an apocalyptic number.

It is an amenable number.

165155610512 is a deficient number, since it is larger than the sum of its proper divisors (155256115084).

165155610512 is a wasteful number, since it uses less digits than its factorization.

165155610512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636466 (or 13636460 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 38.

The spelling of 165155610512 in words is "one hundred sixty-five billion, one hundred fifty-five million, six hundred ten thousand, five hundred twelve".