19996231109184 has 224 divisors, whose sum is σ = 64554033838080. Its totient is φ = 6019334208000.

The previous prime is 19996231109171. The next prime is 19996231109213. The reversal of 19996231109184 is 48190113269991.

19996231109184 is a `hidden beast` number, since 19 + 99 + 62 + 311 + 0 + 91 + 84 = 666.

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 31 ways as a sum of consecutive naturals, for example, 613204 + ... + 6353619.

Almost surely, 2^{19996231109184} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19996231109184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32277016919040).

19996231109184 is an abundant number, since it is smaller than the sum of its proper divisors (44557802728896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19996231109184 is a wasteful number, since it uses less digits than its factorization.

19996231109184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967006 (or 6966990 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 63.

The spelling of 19996231109184 in words is "nineteen trillion, nine hundred ninety-six billion, two hundred thirty-one million, one hundred nine thousand, one hundred eighty-four".