199800393841 has 4 divisors (see below), whose sum is σ = 204446914672. Its totient is φ = 195153873012.

The previous prime is 199800393839. The next prime is 199800393889. The reversal of 199800393841 is 148393008991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199800393841 - 2¹ = 199800393839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199800391841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2323260351 + ... + 2323260436.

It is an arithmetic number, because the mean of its divisors is an integer number (51111728668).

Almost surely, 2^199800393841 is an apocalyptic number.

It is an amenable number.

199800393841 is a deficient number, since it is larger than the sum of its proper divisors (4646520831).

199800393841 is an equidigital number, since it uses as much as digits as its factorization.

199800393841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646520830.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The spelling of 199800393841 in words is "one hundred ninety-nine billion, eight hundred million, three hundred ninety-three thousand, eight hundred forty-one".