165342828243561 has 8 divisors (see below), whose sum is σ = 220457180080800. Its totient is φ = 110228514284352.

The previous prime is 165342828243559. The next prime is 165342828243589.

165342828243561 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 165342828243561 - 2¹ = 165342828243559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165342828243495 and 165342828243504.

It is not an unprimeable number, because it can be changed into a prime (165342828243511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3098865 + ... + 18446913.

It is an arithmetic number, because the mean of its divisors is an integer number (27557147510100).

Almost surely, 2^{165342828243561} is an apocalyptic number.

It is an amenable number.

165342828243561 is a deficient number, since it is larger than the sum of its proper divisors (55114351837239).

165342828243561 is a wasteful number, since it uses less digits than its factorization.

165342828243561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18939015.

The product of its digits is 66355200, while the sum is 60.

The spelling of 165342828243561 in words is "one hundred sixty-five trillion, three hundred forty-two billion, eight hundred twenty-eight million, two hundred forty-three thousand, five hundred sixty-one".