135134245217 has 2 divisors, whose sum is σ = 135134245218. Its totient is φ = 135134245216.

The previous prime is 135134245193. The next prime is 135134245223. The reversal of 135134245217 is 712542431531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125228223376 + 9906021841 = 353876^2 + 99529^2 .

It is a cyclic number.

It is not a de Polignac number, because 135134245217 - 2¹⁸ = 135133983073 is a prime.

It is a super-2 number, since 2×135134245217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135134245237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67567122608 + 67567122609.

It is an arithmetic number, because the mean of its divisors is an integer number (67567122609).

Almost surely, 2^135134245217 is an apocalyptic number.

It is an amenable number.

135134245217 is a deficient number, since it is larger than the sum of its proper divisors (1).

135134245217 is an equidigital number, since it uses as much as digits as its factorization.

135134245217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

Adding to 135134245217 its reverse (712542431531), we get a palindrome (847676676748).

The spelling of 135134245217 in words is "one hundred thirty-five billion, one hundred thirty-four million, two hundred forty-five thousand, two hundred seventeen".