165143034565 has 8 divisors (see below), whose sum is σ = 198796790520. Its totient is φ = 131697661632.

The previous prime is 165143034547. The next prime is 165143034569. The reversal of 165143034565 is 565430341561.

It can be written as a sum of positive squares in 4 ways, for example, as 6752566276 + 158390468289 = 82174^2 + 397983^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 165143034565 - 2⁹ = 165143034053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165143034569) 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, 52094010 + ... + 52097179.

It is an arithmetic number, because the mean of its divisors is an integer number (24849598815).

Almost surely, 2^165143034565 is an apocalyptic number.

It is an amenable number.

165143034565 is a deficient number, since it is larger than the sum of its proper divisors (33653755955).

165143034565 is a wasteful number, since it uses less digits than its factorization.

165143034565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104191511.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 165143034565 in words is "one hundred sixty-five billion, one hundred forty-three million, thirty-four thousand, five hundred sixty-five".