135516631241 has 2 divisors, whose sum is σ = 135516631242. Its totient is φ = 135516631240.

The previous prime is 135516631121. The next prime is 135516631253. The reversal of 135516631241 is 142136615531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133017031225 + 2499600016 = 364715^2 + 49996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135516631241 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 135516631195 and 135516631204.

It is not a weakly prime, because it can be changed into another prime (135516631291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67758315620 + 67758315621.

It is an arithmetic number, because the mean of its divisors is an integer number (67758315621).

Almost surely, 2^135516631241 is an apocalyptic number.

It is an amenable number.

135516631241 is a deficient number, since it is larger than the sum of its proper divisors (1).

135516631241 is an equidigital number, since it uses as much as digits as its factorization.

135516631241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The spelling of 135516631241 in words is "one hundred thirty-five billion, five hundred sixteen million, six hundred thirty-one thousand, two hundred forty-one".