198550650013 has 2 divisors, whose sum is σ = 198550650014. Its totient is φ = 198550650012.

The previous prime is 198550649959. The next prime is 198550650037. The reversal of 198550650013 is 310056055891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113847532569 + 84703117444 = 337413^2 + 291038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198550650013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198550650043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99275325006 + 99275325007.

It is an arithmetic number, because the mean of its divisors is an integer number (99275325007).

Almost surely, 2^198550650013 is an apocalyptic number.

It is an amenable number.

198550650013 is a deficient number, since it is larger than the sum of its proper divisors (1).

198550650013 is an equidigital number, since it uses as much as digits as its factorization.

198550650013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 198550650013 in words is "one hundred ninety-eight billion, five hundred fifty million, six hundred fifty thousand, thirteen".