199591978714 has 16 divisors (see below), whose sum is σ = 312422106240. Its totient is φ = 95451756400.

The previous prime is 199591978679. The next prime is 199591978717. The reversal of 199591978714 is 417879195991.

It is not an unprimeable number, because it can be changed into a prime (199591978717) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 796539 + ... + 1016689.

It is an arithmetic number, because the mean of its divisors is an integer number (19526381640).

Almost surely, 2^199591978714 is an apocalyptic number.

199591978714 is a deficient number, since it is larger than the sum of its proper divisors (112830127526).

199591978714 is a wasteful number, since it uses less digits than its factorization.

199591978714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239885.

The product of its digits is 51438240, while the sum is 70.

The spelling of 199591978714 in words is "one hundred ninety-nine billion, five hundred ninety-one million, nine hundred seventy-eight thousand, seven hundred fourteen".