199256449612 has 12 divisors (see below), whose sum is σ = 380398676616. Its totient is φ = 90571113440.

The previous prime is 199256449607. The next prime is 199256449619. The reversal of 199256449612 is 216944652991.

It is a super-3 number, since 3×199256449612³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (199256449619) 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, 2264277793 + ... + 2264277880.

It is an arithmetic number, because the mean of its divisors is an integer number (31699889718).

Almost surely, 2^199256449612 is an apocalyptic number.

It is an amenable number.

199256449612 is a deficient number, since it is larger than the sum of its proper divisors (181142227004).

199256449612 is a wasteful number, since it uses less digits than its factorization.

199256449612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528555688 (or 4528555686 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 58.

The spelling of 199256449612 in words is "one hundred ninety-nine billion, two hundred fifty-six million, four hundred forty-nine thousand, six hundred twelve".