135312644213309 has 2 divisors, whose sum is σ = 135312644213310. Its totient is φ = 135312644213308.

The previous prime is 135312644213233. The next prime is 135312644213323. The reversal of 135312644213309 is 903312446213531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117735042934084 + 17577601279225 = 10850578^2 + 4192565^2 .

It is a cyclic number.

It is not a de Polignac number, because 135312644213309 - 2²⁴ = 135312627436093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135312644218309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67656322106654 + 67656322106655.

It is an arithmetic number, because the mean of its divisors is an integer number (67656322106655).

Almost surely, 2^{135312644213309} is an apocalyptic number.

It is an amenable number.

135312644213309 is a deficient number, since it is larger than the sum of its proper divisors (1).

135312644213309 is an equidigital number, since it uses as much as digits as its factorization.

135312644213309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 135312644213309 in words is "one hundred thirty-five trillion, three hundred twelve billion, six hundred forty-four million, two hundred thirteen thousand, three hundred nine".