12536434177 has 2 divisors, whose sum is σ = 12536434178. Its totient is φ = 12536434176.

The previous prime is 12536434147. The next prime is 12536434237. The reversal of 12536434177 is 77143463521.

12536434177 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12524071921 + 12362256 = 111911^2 + 3516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12536434177 is a prime.

It is not a weakly prime, because it can be changed into another prime (12536434147) 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, 6268217088 + 6268217089.

It is an arithmetic number, because the mean of its divisors is an integer number (6268217089).

Almost surely, 2^12536434177 is an apocalyptic number.

It is an amenable number.

12536434177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12536434177 is an equidigital number, since it uses as much as digits as its factorization.

12536434177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 43.

Adding to 12536434177 its reverse (77143463521), we get a palindrome (89679897698).

The spelling of 12536434177 in words is "twelve billion, five hundred thirty-six million, four hundred thirty-four thousand, one hundred seventy-seven".