199498844141 has 2 divisors, whose sum is σ = 199498844142. Its totient is φ = 199498844140.

The previous prime is 199498844117. The next prime is 199498844189. The reversal of 199498844141 is 141448894991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103327530916 + 96171313225 = 321446^2 + 310115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199498844141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199498844641) 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 as a sum of consecutive naturals, namely, 99749422070 + 99749422071.

It is an arithmetic number, because the mean of its divisors is an integer number (99749422071).

Almost surely, 2^199498844141 is an apocalyptic number.

It is an amenable number.

199498844141 is a deficient number, since it is larger than the sum of its proper divisors (1).

199498844141 is an equidigital number, since it uses as much as digits as its factorization.

199498844141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11943936, while the sum is 62.

The spelling of 199498844141 in words is "one hundred ninety-nine billion, four hundred ninety-eight million, eight hundred forty-four thousand, one hundred forty-one".