19699833204128 has 192 divisors, whose sum is σ = 50667639644160. Its totient is φ = 7310829926400.

The previous prime is 19699833204119. The next prime is 19699833204223. The reversal of 19699833204128 is 82140233899691.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12817388 + ... + 14271828.

It is an arithmetic number, because the mean of its divisors is an integer number (263893956480).

Almost surely, 2^{19699833204128} 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 19699833204128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25333819822080).

19699833204128 is an abundant number, since it is smaller than the sum of its proper divisors (30967806440032).

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

19699833204128 is a wasteful number, since it uses less digits than its factorization.

19699833204128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454731 (or 1454723 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 65.

The spelling of 19699833204128 in words is "nineteen trillion, six hundred ninety-nine billion, eight hundred thirty-three million, two hundred four thousand, one hundred twenty-eight".