163655135142066 has 40 divisors (see below), whose sum is σ = 366716158405740. Its totient is φ = 54550606475232.

The previous prime is 163655135142047. The next prime is 163655135142113. The reversal of 163655135142066 is 660241531556361.

163655135142066 is a `hidden beast` number, since 1 + 6 + 3 + 6 + 55 + 13 + 514 + 2 + 0 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 159093343994841 + 4561791147225 = 12613221^2 + 2135835^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2193681 + ... + 18224228.

Almost surely, 2^{163655135142066} is an apocalyptic number.

163655135142066 is an abundant number, since it is smaller than the sum of its proper divisors (203061023263674).

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

163655135142066 is a wasteful number, since it uses less digits than its factorization.

163655135142066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20467400 (or 20467391 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 54.

The spelling of 163655135142066 in words is "one hundred sixty-three trillion, six hundred fifty-five billion, one hundred thirty-five million, one hundred forty-two thousand, sixty-six".