19996569244116 has 432 divisors, whose sum is σ = 56684825608320. Its totient is φ = 6159153116160.

The previous prime is 19996569244111. The next prime is 19996569244117. The reversal of 19996569244116 is 61144296569991.

It is a happy number.

19996569244116 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 6 + 569 + 2 + 4 + 41 + 16 = 666.

It is a super-3 number, since 3×19996569244116³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19996569244111) 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 143 ways as a sum of consecutive naturals, for example, 2171411320 + ... + 2171420528.

Almost surely, 2^{19996569244116} 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 19996569244116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28342412804160).

19996569244116 is an abundant number, since it is smaller than the sum of its proper divisors (36688256364204).

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

19996569244116 is a wasteful number, since it uses less digits than its factorization.

19996569244116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9418 (or 9381 counting only the distinct ones).

The product of its digits is 226748160, while the sum is 72.

The spelling of 19996569244116 in words is "nineteen trillion, nine hundred ninety-six billion, five hundred sixty-nine million, two hundred forty-four thousand, one hundred sixteen".