199983549653 has 2 divisors, whose sum is σ = 199983549654. Its totient is φ = 199983549652.

The previous prime is 199983549617. The next prime is 199983549671. The reversal of 199983549653 is 356945389991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153226839364 + 46756710289 = 391442^2 + 216233^2 .

It is a cyclic number.

It is not a de Polignac number, because 199983549653 - 2¹² = 199983545557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199983543653) 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, 99991774826 + 99991774827.

It is an arithmetic number, because the mean of its divisors is an integer number (99991774827).

Almost surely, 2^199983549653 is an apocalyptic number.

It is an amenable number.

199983549653 is a deficient number, since it is larger than the sum of its proper divisors (1).

199983549653 is an equidigital number, since it uses as much as digits as its factorization.

199983549653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 283435200, while the sum is 71.

The spelling of 199983549653 in words is "one hundred ninety-nine billion, nine hundred eighty-three million, five hundred forty-nine thousand, six hundred fifty-three".