199775241089 has 2 divisors, whose sum is σ = 199775241090. Its totient is φ = 199775241088.

The previous prime is 199775241047. The next prime is 199775241097. The reversal of 199775241089 is 980142577991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199295280625 + 479960464 = 446425^2 + 21908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199775241089 is a prime.

It is not a weakly prime, because it can be changed into another prime (199775241689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99887620544 + 99887620545.

It is an arithmetic number, because the mean of its divisors is an integer number (99887620545).

Almost surely, 2^199775241089 is an apocalyptic number.

It is an amenable number.

199775241089 is a deficient number, since it is larger than the sum of its proper divisors (1).

199775241089 is an equidigital number, since it uses as much as digits as its factorization.

199775241089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 62.

The spelling of 199775241089 in words is "one hundred ninety-nine billion, seven hundred seventy-five million, two hundred forty-one thousand, eighty-nine".