19869695992 has 8 divisors (see below), whose sum is σ = 37255680000. Its totient is φ = 9934847992.

The previous prime is 19869695977. The next prime is 19869696037. The reversal of 19869695992 is 29959696891.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1241855992 + ... + 1241856007.

It is an arithmetic number, because the mean of its divisors is an integer number (4656960000).

Almost surely, 2^19869695992 is an apocalyptic number.

It is an amenable number.

19869695992 is a deficient number, since it is larger than the sum of its proper divisors (17385984008).

19869695992 is a wasteful number, since it uses less digits than its factorization.

19869695992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483712005 (or 2483712001 counting only the distinct ones).

The product of its digits is 170061120, while the sum is 73.

The spelling of 19869695992 in words is "nineteen billion, eight hundred sixty-nine million, six hundred ninety-five thousand, nine hundred ninety-two".