11124145261 has 2 divisors, whose sum is σ = 11124145262. Its totient is φ = 11124145260.

The previous prime is 11124145259. The next prime is 11124145309. The reversal of 11124145261 is 16254142111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9863469225 + 1260676036 = 99315^2 + 35506^2 .

It is a cyclic number.

It is not a de Polignac number, because 11124145261 - 2¹ = 11124145259 is a prime.

Together with 11124145259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11124148261) 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, 5562072630 + 5562072631.

It is an arithmetic number, because the mean of its divisors is an integer number (5562072631).

Almost surely, 2^11124145261 is an apocalyptic number.

It is an amenable number.

11124145261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11124145261 is an equidigital number, since it uses as much as digits as its factorization.

11124145261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 28.

Adding to 11124145261 its reverse (16254142111), we get a palindrome (27378287372).

The spelling of 11124145261 in words is "eleven billion, one hundred twenty-four million, one hundred forty-five thousand, two hundred sixty-one".