199648937911 has 2 divisors, whose sum is σ = 199648937912. Its totient is φ = 199648937910.

The previous prime is 199648937897. The next prime is 199648937923. The reversal of 199648937911 is 119739846991.

199648937911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (119739846991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199648937911 - 2¹³ = 199648929719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199648937011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99824468955 + 99824468956.

It is an arithmetic number, because the mean of its divisors is an integer number (99824468956).

Almost surely, 2^199648937911 is an apocalyptic number.

199648937911 is a deficient number, since it is larger than the sum of its proper divisors (1).

199648937911 is an equidigital number, since it uses as much as digits as its factorization.

199648937911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 67.

The spelling of 199648937911 in words is "one hundred ninety-nine billion, six hundred forty-eight million, nine hundred thirty-seven thousand, nine hundred eleven".