165872560928255 has 4 divisors (see below), whose sum is σ = 199047073113912. Its totient is φ = 132698048742600.

The previous prime is 165872560928209. The next prime is 165872560928257. The reversal of 165872560928255 is 552829065278561.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 165872560928255 - 2³⁸ = 165597683021311 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 (165872560928257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16587256092821 + ... + 16587256092830.

It is an arithmetic number, because the mean of its divisors is an integer number (49761768278478).

Almost surely, 2^{165872560928255} is an apocalyptic number.

165872560928255 is a deficient number, since it is larger than the sum of its proper divisors (33174512185657).

165872560928255 is an equidigital number, since it uses as much as digits as its factorization.

165872560928255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33174512185656.

The product of its (nonzero) digits is 725760000, while the sum is 71.

The spelling of 165872560928255 in words is "one hundred sixty-five trillion, eight hundred seventy-two billion, five hundred sixty million, nine hundred twenty-eight thousand, two hundred fifty-five".