165510065165055 has 32 divisors (see below), whose sum is σ = 297585990084096. Its totient is φ = 77939187874944.

The previous prime is 165510065164993. The next prime is 165510065165089. The reversal of 165510065165055 is 550561560015561.

165510065165055 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165510065165055 - 2⁸ = 165510065164799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165510065164989 and 165510065165007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18451507797 + ... + 18451516766.

It is an arithmetic number, because the mean of its divisors is an integer number (9299562190128).

Almost surely, 2^{165510065165055} is an apocalyptic number.

165510065165055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165510065165055 is a deficient number, since it is larger than the sum of its proper divisors (132075924919041).

165510065165055 is a wasteful number, since it uses less digits than its factorization.

165510065165055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36903024607.

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 165510065165055 in words is "one hundred sixty-five trillion, five hundred ten billion, sixty-five million, one hundred sixty-five thousand, fifty-five".