135128670247 has 2 divisors, whose sum is σ = 135128670248. Its totient is φ = 135128670246.

The previous prime is 135128670221. The next prime is 135128670289. The reversal of 135128670247 is 742076821531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135128670247 - 2⁷ = 135128670119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135128670197 and 135128670206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135128679247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67564335123 + 67564335124.

It is an arithmetic number, because the mean of its divisors is an integer number (67564335124).

Almost surely, 2^135128670247 is an apocalyptic number.

135128670247 is a deficient number, since it is larger than the sum of its proper divisors (1).

135128670247 is an equidigital number, since it uses as much as digits as its factorization.

135128670247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 135128670247 in words is "one hundred thirty-five billion, one hundred twenty-eight million, six hundred seventy thousand, two hundred forty-seven".