199256449611 has 8 divisors (see below), whose sum is σ = 268254638080. Its totient is φ = 131547947112.

The previous prime is 199256449607. The next prime is 199256449619. The reversal of 199256449611 is 116944652991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199256449611 - 2² = 199256449607 is a prime.

It is a super-3 number, since 3×199256449611³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199256449619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322421131 + ... + 322421748.

It is an arithmetic number, because the mean of its divisors is an integer number (33531829760).

Almost surely, 2^199256449611 is an apocalyptic number.

199256449611 is a deficient number, since it is larger than the sum of its proper divisors (68998188469).

199256449611 is a wasteful number, since it uses less digits than its factorization.

199256449611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644842985.

The product of its digits is 4199040, while the sum is 57.

The spelling of 199256449611 in words is "one hundred ninety-nine billion, two hundred fifty-six million, four hundred forty-nine thousand, six hundred eleven".