11223136537 has 2 divisors, whose sum is σ = 11223136538. Its totient is φ = 11223136536.

The previous prime is 11223136531. The next prime is 11223136571. The reversal of 11223136537 is 73563132211.

It is an a-pointer prime, because the next prime (11223136571) can be obtained adding 11223136537 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6012606681 + 5210529856 = 77541^2 + 72184^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223136537 - 2²⁷ = 11088918809 is a prime.

It is not a weakly prime, because it can be changed into another prime (11223136531) 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, 5611568268 + 5611568269.

It is an arithmetic number, because the mean of its divisors is an integer number (5611568269).

Almost surely, 2^11223136537 is an apocalyptic number.

It is an amenable number.

11223136537 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223136537 is an equidigital number, since it uses as much as digits as its factorization.

11223136537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

Adding to 11223136537 its reverse (73563132211), we get a palindrome (84786268748).

The spelling of 11223136537 in words is "eleven billion, two hundred twenty-three million, one hundred thirty-six thousand, five hundred thirty-seven".