165552021565005 has 16 divisors (see below), whose sum is σ = 278824457373120. Its totient is φ = 83647337211648.

The previous prime is 165552021564827. The next prime is 165552021565031. The reversal of 165552021565005 is 500565120255561.

It is not a de Polignac number, because 165552021565005 - 2¹⁸ = 165552021302861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290442142812 + ... + 290442143381.

It is an arithmetic number, because the mean of its divisors is an integer number (17426528585820).

Almost surely, 2^{165552021565005} is an apocalyptic number.

165552021565005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165552021565005 is a deficient number, since it is larger than the sum of its proper divisors (113272435808115).

165552021565005 is a wasteful number, since it uses less digits than its factorization.

165552021565005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580884286220.

The product of its (nonzero) digits is 2250000, while the sum is 48.

The spelling of 165552021565005 in words is "one hundred sixty-five trillion, five hundred fifty-two billion, twenty-one million, five hundred sixty-five thousand, five".