199886903728 has 20 divisors (see below), whose sum is σ = 390900326760. Its totient is φ = 99009400064.

The previous prime is 199886903717. The next prime is 199886903729. The reversal of 199886903728 is 827309688991.

It is a super-3 number, since 3×199886903728³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (199886903729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58376473 + ... + 58379896.

It is an arithmetic number, because the mean of its divisors is an integer number (19545016338).

Almost surely, 2^199886903728 is an apocalyptic number.

It is an amenable number.

199886903728 is a deficient number, since it is larger than the sum of its proper divisors (191013423032).

199886903728 is a wasteful number, since it uses less digits than its factorization.

199886903728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116756484 (or 116756478 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 70.

The spelling of 199886903728 in words is "one hundred ninety-nine billion, eight hundred eighty-six million, nine hundred three thousand, seven hundred twenty-eight".