165239935001 has 4 divisors (see below), whose sum is σ = 165260165904. Its totient is φ = 165219704100.

The previous prime is 165239934991. The next prime is 165239935027. The reversal of 165239935001 is 100539932561.

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 an emirpimes, since its reverse is a distinct semiprime: 100539932561 = 31 ⋅3243223631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165239935001 is a prime.

It is a super-3 number, since 3×165239935001³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165239935031) 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, 10103195 + ... + 10119536.

It is an arithmetic number, because the mean of its divisors is an integer number (41315041476).

Almost surely, 2^165239935001 is an apocalyptic number.

It is an amenable number.

165239935001 is a deficient number, since it is larger than the sum of its proper divisors (20230903).

165239935001 is an equidigital number, since it uses as much as digits as its factorization.

165239935001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20230902.

The product of its (nonzero) digits is 218700, while the sum is 44.

The spelling of 165239935001 in words is "one hundred sixty-five billion, two hundred thirty-nine million, nine hundred thirty-five thousand, one".