165505331074173 has 16 divisors (see below), whose sum is σ = 226437269579136. Its totient is φ = 107464216348160.

The previous prime is 165505331074169. The next prime is 165505331074189. The reversal of 165505331074173 is 371470133505561.

It is a cyclic number.

It is not a de Polignac number, because 165505331074173 - 2² = 165505331074169 is a prime.

It is a super-2 number, since 2×165505331074173² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165505331074133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134473265 + ... + 1134619142.

It is an arithmetic number, because the mean of its divisors is an integer number (14152329348696).

Almost surely, 2^{165505331074173} is an apocalyptic number.

It is an amenable number.

165505331074173 is a deficient number, since it is larger than the sum of its proper divisors (60931938504963).

165505331074173 is a wasteful number, since it uses less digits than its factorization.

165505331074173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269093044.

The product of its (nonzero) digits is 3969000, while the sum is 51.

The spelling of 165505331074173 in words is "one hundred sixty-five trillion, five hundred five billion, three hundred thirty-one million, seventy-four thousand, one hundred seventy-three".