164168973604 has 6 divisors (see below), whose sum is σ = 287295703814. Its totient is φ = 82084486800.

The previous prime is 164168973593. The next prime is 164168973613. The reversal of 164168973604 is 406379861461.

It can be written as a sum of positive squares in only one way, i.e., 117819189504 + 46349784100 = 343248^2 + 215290^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20521121697 + ... + 20521121704.

Almost surely, 2^164168973604 is an apocalyptic number.

It is an amenable number.

164168973604 is a deficient number, since it is larger than the sum of its proper divisors (123126730210).

164168973604 is a wasteful number, since it uses less digits than its factorization.

164168973604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41042243405 (or 41042243403 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 164168973604 in words is "one hundred sixty-four billion, one hundred sixty-eight million, nine hundred seventy-three thousand, six hundred four".