199441089966 has 16 divisors (see below), whose sum is σ = 398886555600. Its totient is φ = 66479634048.

The previous prime is 199441089959. The next prime is 199441089977. The reversal of 199441089966 is 669980144991.

It is a super-2 number, since 2×199441089966² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199441089897 and 199441089906.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1001520 + ... + 1184028.

It is an arithmetic number, because the mean of its divisors is an integer number (24930409725).

Almost surely, 2^199441089966 is an apocalyptic number.

199441089966 is an abundant number, since it is smaller than the sum of its proper divisors (199445465634).

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

199441089966 is a wasteful number, since it uses less digits than its factorization.

199441089966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364643.

The product of its (nonzero) digits is 30233088, while the sum is 66.

The spelling of 199441089966 in words is "one hundred ninety-nine billion, four hundred forty-one million, eighty-nine thousand, nine hundred sixty-six".