165253887875 has 32 divisors (see below), whose sum is σ = 206866820160. Its totient is φ = 131800032000.

The previous prime is 165253887863. The next prime is 165253887907. The reversal of 165253887875 is 578788352561.

It is not a de Polignac number, because 165253887875 - 2⁴ = 165253887859 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77184305 + ... + 77186445.

It is an arithmetic number, because the mean of its divisors is an integer number (6464588130).

Almost surely, 2^165253887875 is an apocalyptic number.

165253887875 is a deficient number, since it is larger than the sum of its proper divisors (41612932285).

165253887875 is an equidigital number, since it uses as much as digits as its factorization.

165253887875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752 (or 3742 counting only the distinct ones).

The product of its digits is 112896000, while the sum is 65.

The spelling of 165253887875 in words is "one hundred sixty-five billion, two hundred fifty-three million, eight hundred eighty-seven thousand, eight hundred seventy-five".