11111101000243 has 2 divisors, whose sum is σ = 11111101000244. Its totient is φ = 11111101000242.

The previous prime is 11111101000231. The next prime is 11111101000249. The reversal of 11111101000243 is 34200010111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111101000243 - 2⁹ = 11111100999731 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111101000249) 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, 5555550500121 + 5555550500122.

It is an arithmetic number, because the mean of its divisors is an integer number (5555550500122).

Almost surely, 2^{11111101000243} is an apocalyptic number.

11111101000243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111101000243 is an equidigital number, since it uses as much as digits as its factorization.

11111101000243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11111101000243 its reverse (34200010111111), we get a palindrome (45311111111354).

The spelling of 11111101000243 in words is "eleven trillion, one hundred eleven billion, one hundred one million, two hundred forty-three", and thus it is an aban number.