164043546320646 has 48 divisors (see below), whose sum is σ = 367027440119808. Its totient is φ = 52897895996400.

The previous prime is 164043546320593. The next prime is 164043546320669. The reversal of 164043546320646 is 646023645340461.

164043546320646 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 4 + 3 + 546 + 32 + 0 + 64 + 6 = 666.

164043546320646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 164043546320592 and 164043546320601.

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, 52299766 + ... + 55347561.

It is an arithmetic number, because the mean of its divisors is an integer number (7646405002496).

Almost surely, 2^{164043546320646} is an apocalyptic number.

164043546320646 is an abundant number, since it is smaller than the sum of its proper divisors (202983893799162).

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

164043546320646 is a wasteful number, since it uses less digits than its factorization.

164043546320646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107650097 (or 107650094 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 54.

The spelling of 164043546320646 in words is "one hundred sixty-four trillion, forty-three billion, five hundred forty-six million, three hundred twenty thousand, six hundred forty-six".