135681835013 has 2 divisors, whose sum is σ = 135681835014. Its totient is φ = 135681835012.

The previous prime is 135681834989. The next prime is 135681835061. The reversal of 135681835013 is 310538186531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108252844324 + 27428990689 = 329018^2 + 165617^2 .

It is an emirp because it is prime and its reverse (310538186531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135681835013 - 2¹² = 135681830917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135681835063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67840917506 + 67840917507.

It is an arithmetic number, because the mean of its divisors is an integer number (67840917507).

Almost surely, 2^135681835013 is an apocalyptic number.

It is an amenable number.

135681835013 is a deficient number, since it is larger than the sum of its proper divisors (1).

135681835013 is an equidigital number, since it uses as much as digits as its factorization.

135681835013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 135681835013 in words is "one hundred thirty-five billion, six hundred eighty-one million, eight hundred thirty-five thousand, thirteen".