163066215561165 has 48 divisors (see below), whose sum is σ = 334165249641600. Its totient is φ = 71974053760896.

The previous prime is 163066215561157. The next prime is 163066215561169. The reversal of 163066215561165 is 561165512660361.

163066215561165 is a `hidden beast` number, since 1 + 6 + 3 + 0 + 6 + 6 + 2 + 15 + 5 + 611 + 6 + 5 = 666.

It is not a de Polignac number, because 163066215561165 - 2³ = 163066215561157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163066215561169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8925344755 + ... + 8925363024.

It is an arithmetic number, because the mean of its divisors is an integer number (6961776034200).

Almost surely, 2^{163066215561165} is an apocalyptic number.

163066215561165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163066215561165 is an abundant number, since it is smaller than the sum of its proper divisors (171099034080435).

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

163066215561165 is a wasteful number, since it uses less digits than its factorization.

163066215561165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17850707826 (or 17850707823 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 163066215561165 in words is "one hundred sixty-three trillion, sixty-six billion, two hundred fifteen million, five hundred sixty-one thousand, one hundred sixty-five".