135360511261 has 2 divisors, whose sum is σ = 135360511262. Its totient is φ = 135360511260.

The previous prime is 135360511213. The next prime is 135360511271. The reversal of 135360511261 is 162115063531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84859185636 + 50501325625 = 291306^2 + 224725^2 .

It is an emirp because it is prime and its reverse (162115063531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135360511261 - 2³⁵ = 101000772893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135360511271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67680255630 + 67680255631.

It is an arithmetic number, because the mean of its divisors is an integer number (67680255631).

Almost surely, 2^135360511261 is an apocalyptic number.

It is an amenable number.

135360511261 is a deficient number, since it is larger than the sum of its proper divisors (1).

135360511261 is an equidigital number, since it uses as much as digits as its factorization.

135360511261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

Adding to 135360511261 its reverse (162115063531), we get a palindrome (297475574792).

The spelling of 135360511261 in words is "one hundred thirty-five billion, three hundred sixty million, five hundred eleven thousand, two hundred sixty-one".