165724143164575 has 24 divisors (see below), whose sum is σ = 205805494835456. Its totient is φ = 132380948700000.

The previous prime is 165724143164563. The next prime is 165724143164579. The reversal of 165724143164575 is 575461341427561.

It is not a de Polignac number, because 165724143164575 - 2¹⁷ = 165724143033503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165724143164579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113633944 + ... + 115083106.

Almost surely, 2^{165724143164575} is an apocalyptic number.

165724143164575 is a deficient number, since it is larger than the sum of its proper divisors (40081351670881).

165724143164575 is a wasteful number, since it uses less digits than its factorization.

165724143164575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456015 (or 1456010 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 61.

The spelling of 165724143164575 in words is "one hundred sixty-five trillion, seven hundred twenty-four billion, one hundred forty-three million, one hundred sixty-four thousand, five hundred seventy-five".