165560144650645 has 8 divisors (see below), whose sum is σ = 198676271810520. Its totient is φ = 132445383567360.

The previous prime is 165560144650577. The next prime is 165560144650729. The reversal of 165560144650645 is 546056441065561.

165560144650645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 64860505174404 + 100699639476241 = 8053602^2 + 10034921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165560144650645 - 2²¹ = 165560142553493 is a prime.

It is a super-2 number, since 2×165560144650645² (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 165560144650645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341252500 + ... + 341737309.

It is an arithmetic number, because the mean of its divisors is an integer number (24834533976315).

Almost surely, 2^{165560144650645} is an apocalyptic number.

It is an amenable number.

165560144650645 is a deficient number, since it is larger than the sum of its proper divisors (33116127159875).

165560144650645 is an equidigital number, since it uses as much as digits as its factorization.

165560144650645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683038295.

The product of its (nonzero) digits is 51840000, while the sum is 58.

The spelling of 165560144650645 in words is "one hundred sixty-five trillion, five hundred sixty billion, one hundred forty-four million, six hundred fifty thousand, six hundred forty-five".