19968605896 has 16 divisors (see below), whose sum is σ = 37561530240. Its totient is φ = 9952197840.

The previous prime is 19968605851. The next prime is 19968605903. The reversal of 19968605896 is 69850686991.

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, 4010496 + ... + 4015471.

It is an arithmetic number, because the mean of its divisors is an integer number (2347595640).

Almost surely, 2^19968605896 is an apocalyptic number.

It is an amenable number.

19968605896 is a deficient number, since it is larger than the sum of its proper divisors (17592924344).

19968605896 is a wasteful number, since it uses less digits than its factorization.

19968605896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8026284 (or 8026280 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 67.

The spelling of 19968605896 in words is "nineteen billion, nine hundred sixty-eight million, six hundred five thousand, eight hundred ninety-six".