165464717753 has 4 divisors (see below), whose sum is σ = 165465609360. Its totient is φ = 165463826148.

The previous prime is 165464717741. The next prime is 165464717807. The reversal of 165464717753 is 357717464561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 357717464561 = 97 ⋅3687808913.

It is a cyclic number.

It is not a de Polignac number, because 165464717753 - 2²⁶ = 165397608889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165464717953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50723 + ... + 577496.

It is an arithmetic number, because the mean of its divisors is an integer number (41366402340).

Almost surely, 2^165464717753 is an apocalyptic number.

It is an amenable number.

165464717753 is a deficient number, since it is larger than the sum of its proper divisors (891607).

165464717753 is an equidigital number, since it uses as much as digits as its factorization.

165464717753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891606.

The product of its digits is 14817600, while the sum is 56.

The spelling of 165464717753 in words is "one hundred sixty-five billion, four hundred sixty-four million, seven hundred seventeen thousand, seven hundred fifty-three".