20163345208 has 16 divisors (see below), whose sum is σ = 37830546000. Its totient is φ = 10075199616.

The previous prime is 20163345173. The next prime is 20163345211. The reversal of 20163345208 is 80254336102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795873 + ... + 820816.

It is an arithmetic number, because the mean of its divisors is an integer number (2364409125).

Almost surely, 2^20163345208 is an apocalyptic number.

It is an amenable number.

20163345208 is a deficient number, since it is larger than the sum of its proper divisors (17667200792).

20163345208 is a wasteful number, since it uses less digits than its factorization.

20163345208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618254 (or 1618250 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 20163345208 in words is "twenty billion, one hundred sixty-three million, three hundred forty-five thousand, two hundred eight".