165655226440023 has 32 divisors (see below), whose sum is σ = 232276121890560. Its totient is φ = 104866938274560.

The previous prime is 165655226440003. The next prime is 165655226440049. The reversal of 165655226440023 is 320044622556561.

It is not a de Polignac number, because 165655226440023 - 2¹⁴ = 165655226423639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165655226440003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19433613 + ... + 26626598.

It is an arithmetic number, because the mean of its divisors is an integer number (7258628809080).

Almost surely, 2^{165655226440023} is an apocalyptic number.

165655226440023 is a deficient number, since it is larger than the sum of its proper divisors (66620895450537).

165655226440023 is a wasteful number, since it uses less digits than its factorization.

165655226440023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46060927.

The product of its (nonzero) digits is 10368000, while the sum is 51.

Adding to 165655226440023 its reverse (320044622556561), we get a palindrome (485699848996584).

The spelling of 165655226440023 in words is "one hundred sixty-five trillion, six hundred fifty-five billion, two hundred twenty-six million, four hundred forty thousand, twenty-three".