11111234137 has 2 divisors, whose sum is σ = 11111234138. Its totient is φ = 11111234136.

The previous prime is 11111234093. The next prime is 11111234159. The reversal of 11111234137 is 73143211111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8856503881 + 2254730256 = 94109^2 + 47484^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111234137 - 2¹¹ = 11111232089 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111234837) 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, 5555617068 + 5555617069.

It is an arithmetic number, because the mean of its divisors is an integer number (5555617069).

Almost surely, 2^11111234137 is an apocalyptic number.

It is an amenable number.

11111234137 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111234137 is an equidigital number, since it uses as much as digits as its factorization.

11111234137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 25.

Adding to 11111234137 its reverse (73143211111), we get a palindrome (84254445248).

The spelling of 11111234137 in words is "eleven billion, one hundred eleven million, two hundred thirty-four thousand, one hundred thirty-seven".