135686644025287 has 2 divisors, whose sum is σ = 135686644025288. Its totient is φ = 135686644025286.

The previous prime is 135686644025279. The next prime is 135686644025311. The reversal of 135686644025287 is 782520446686531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135686644025287 - 2³ = 135686644025279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135686644025227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67843322012643 + 67843322012644.

It is an arithmetic number, because the mean of its divisors is an integer number (67843322012644).

Almost surely, 2^{135686644025287} is an apocalyptic number.

135686644025287 is a deficient number, since it is larger than the sum of its proper divisors (1).

135686644025287 is an equidigital number, since it uses as much as digits as its factorization.

135686644025287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 464486400, while the sum is 67.

The spelling of 135686644025287 in words is "one hundred thirty-five trillion, six hundred eighty-six billion, six hundred forty-four million, twenty-five thousand, two hundred eighty-seven".