199996964784 has 240 divisors, whose sum is σ = 605792476800. Its totient is φ = 63163469952.

The previous prime is 199996964773. The next prime is 199996964863. The reversal of 199996964784 is 487469699991.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24448407 + ... + 24456585.

It is an arithmetic number, because the mean of its divisors is an integer number (2524135320).

Almost surely, 2^199996964784 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 199996964784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302896238400).

199996964784 is an abundant number, since it is smaller than the sum of its proper divisors (405795512016).

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

199996964784 is a wasteful number, since it uses less digits than its factorization.

199996964784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8349 (or 8314 counting only the distinct ones).

The product of its digits is 1904684544, while the sum is 81.

The spelling of 199996964784 in words is "one hundred ninety-nine billion, nine hundred ninety-six million, nine hundred sixty-four thousand, seven hundred eighty-four".