165666545160 has 64 divisors (see below), whose sum is σ = 498353990400. Its totient is φ = 44057358336.

The previous prime is 165666545159. The next prime is 165666545167. The reversal of 165666545160 is 61545666561.

165666545160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165666545167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1836825 + ... + 1924904.

It is an arithmetic number, because the mean of its divisors is an integer number (7786781100).

Almost surely, 2^165666545160 is an apocalyptic number.

165666545160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165666545160 is an abundant number, since it is smaller than the sum of its proper divisors (332687445240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165666545160 is a wasteful number, since it uses less digits than its factorization.

165666545160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762110 (or 3762106 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 165666545160 in words is "one hundred sixty-five billion, six hundred sixty-six million, five hundred forty-five thousand, one hundred sixty".