198543312433 has 2 divisors, whose sum is σ = 198543312434. Its totient is φ = 198543312432.

The previous prime is 198543312431. The next prime is 198543312467. The reversal of 198543312433 is 334213345891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190350709264 + 8192603169 = 436292^2 + 90513^2 .

It is a cyclic number.

It is not a de Polignac number, because 198543312433 - 2¹ = 198543312431 is a prime.

Together with 198543312431, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (198543312431) 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 as a sum of consecutive naturals, namely, 99271656216 + 99271656217.

It is an arithmetic number, because the mean of its divisors is an integer number (99271656217).

Almost surely, 2^198543312433 is an apocalyptic number.

It is an amenable number.

198543312433 is a deficient number, since it is larger than the sum of its proper divisors (1).

198543312433 is an equidigital number, since it uses as much as digits as its factorization.

198543312433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 46.

The spelling of 198543312433 in words is "one hundred ninety-eight billion, five hundred forty-three million, three hundred twelve thousand, four hundred thirty-three".