135262119856817 has 2 divisors, whose sum is σ = 135262119856818. Its totient is φ = 135262119856816.

The previous prime is 135262119856757. The next prime is 135262119856837. The reversal of 135262119856817 is 718658911262531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129855118369201 + 5407001487616 = 11395399^2 + 2325296^2 .

It is an emirp because it is prime and its reverse (718658911262531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135262119856817 - 2⁶ = 135262119856753 is a prime.

It is not a weakly prime, because it can be changed into another prime (135262119856837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67631059928408 + 67631059928409.

It is an arithmetic number, because the mean of its divisors is an integer number (67631059928409).

Almost surely, 2^{135262119856817} is an apocalyptic number.

It is an amenable number.

135262119856817 is a deficient number, since it is larger than the sum of its proper divisors (1).

135262119856817 is an equidigital number, since it uses as much as digits as its factorization.

135262119856817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43545600, while the sum is 65.

The spelling of 135262119856817 in words is "one hundred thirty-five trillion, two hundred sixty-two billion, one hundred nineteen million, eight hundred fifty-six thousand, eight hundred seventeen".