165663123544303 has 16 divisors (see below), whose sum is σ = 206543662907904. Its totient is φ = 129086507115360.

The previous prime is 165663123544231. The next prime is 165663123544333. The reversal of 165663123544303 is 303445321366561.

It is a cyclic number.

It is not a de Polignac number, because 165663123544303 - 2³⁷ = 165525684590831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165663123544333) 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, 7562100 + ... + 19710697.

It is an arithmetic number, because the mean of its divisors is an integer number (12908978931744).

Almost surely, 2^{165663123544303} is an apocalyptic number.

165663123544303 is a deficient number, since it is larger than the sum of its proper divisors (40880539363601).

165663123544303 is a wasteful number, since it uses less digits than its factorization.

165663123544303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27351702.

The product of its (nonzero) digits is 13996800, while the sum is 52.

The spelling of 165663123544303 in words is "one hundred sixty-five trillion, six hundred sixty-three billion, one hundred twenty-three million, five hundred forty-four thousand, three hundred three".