165655266061323 has 4 divisors (see below), whose sum is σ = 220873688081768. Its totient is φ = 110436844040880.

The previous prime is 165655266061289. The next prime is 165655266061343. The reversal of 165655266061323 is 323160662556561.

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

It is not a de Polignac number, because 165655266061323 - 2¹⁰ = 165655266060299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165655266061343) 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, 27609211010218 + ... + 27609211010223.

It is an arithmetic number, because the mean of its divisors is an integer number (55218422020442).

Almost surely, 2^{165655266061323} is an apocalyptic number.

165655266061323 is a deficient number, since it is larger than the sum of its proper divisors (55218422020445).

165655266061323 is an equidigital number, since it uses as much as digits as its factorization.

165655266061323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55218422020444.

The product of its (nonzero) digits is 34992000, while the sum is 57.

The spelling of 165655266061323 in words is "one hundred sixty-five trillion, six hundred fifty-five billion, two hundred sixty-six million, sixty-one thousand, three hundred twenty-three".