163646422631064 has 96 divisors (see below), whose sum is σ = 444311818236000. Its totient is φ = 54413135755776.

The previous prime is 163646422631051. The next prime is 163646422631071. The reversal of 163646422631064 is 460136224646361.

163646422631064 is a `hidden beast` number, since 1 + 6 + 3 + 6 + 46 + 4 + 226 + 310 + 64 = 666.

163646422631064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 163646422631064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150830164 + ... + 151911260.

It is an arithmetic number, because the mean of its divisors is an integer number (4628248106625).

Almost surely, 2^{163646422631064} is an apocalyptic number.

It is an amenable number.

163646422631064 is an abundant number, since it is smaller than the sum of its proper divisors (280665395604936).

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

163646422631064 is a wasteful number, since it uses less digits than its factorization.

163646422631064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086337 (or 1086330 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 54.

The spelling of 163646422631064 in words is "one hundred sixty-three trillion, six hundred forty-six billion, four hundred twenty-two million, six hundred thirty-one thousand, sixty-four".