11238116551 has 2 divisors, whose sum is σ = 11238116552. Its totient is φ = 11238116550.

The previous prime is 11238116507. The next prime is 11238116573. The reversal of 11238116551 is 15561183211.

11238116551 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 a cyclic number.

It is not a de Polignac number, because 11238116551 - 2⁹ = 11238116039 is a prime.

It is a super-2 number, since 2×11238116551² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11238116651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5619058275 + 5619058276.

It is an arithmetic number, because the mean of its divisors is an integer number (5619058276).

Almost surely, 2^11238116551 is an apocalyptic number.

11238116551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11238116551 is an equidigital number, since it uses as much as digits as its factorization.

11238116551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 34.

Adding to 11238116551 its reverse (15561183211), we get a palindrome (26799299762).

The spelling of 11238116551 in words is "eleven billion, two hundred thirty-eight million, one hundred sixteen thousand, five hundred fifty-one".