164205045908 has 6 divisors (see below), whose sum is σ = 287358830346. Its totient is φ = 82102522952.

The previous prime is 164205045877. The next prime is 164205045931. The reversal of 164205045908 is 809540502461.

It can be written as a sum of positive squares in only one way, i.e., 161027243524 + 3177802384 = 401282^2 + 56372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20525630735 + ... + 20525630742.

It is an arithmetic number, because the mean of its divisors is an integer number (47893138391).

Almost surely, 2^164205045908 is an apocalyptic number.

It is an amenable number.

164205045908 is a deficient number, since it is larger than the sum of its proper divisors (123153784438).

164205045908 is a wasteful number, since it uses less digits than its factorization.

164205045908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41051261481 (or 41051261479 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 164205045908 in words is "one hundred sixty-four billion, two hundred five million, forty-five thousand, nine hundred eight".