19904968799 has 8 divisors (see below), whose sum is σ = 20225389872. Its totient is φ = 19586966400.

The previous prime is 19904968753. The next prime is 19904968807. The reversal of 19904968799 is 99786940991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19904968799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19904968739) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 588074 + ... + 620999.

It is an arithmetic number, because the mean of its divisors is an integer number (2528173734).

Almost surely, 2^19904968799 is an apocalyptic number.

19904968799 is a deficient number, since it is larger than the sum of its proper divisors (320421073).

19904968799 is a wasteful number, since it uses less digits than its factorization.

19904968799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209337.

The product of its (nonzero) digits is 79361856, while the sum is 71.

The spelling of 19904968799 in words is "nineteen billion, nine hundred four million, nine hundred sixty-eight thousand, seven hundred ninety-nine".