135638026213 has 2 divisors, whose sum is σ = 135638026214. Its totient is φ = 135638026212.

The previous prime is 135638026189. The next prime is 135638026283. The reversal of 135638026213 is 312620836531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117315155169 + 18322871044 = 342513^2 + 135362^2 .

It is an emirp because it is prime and its reverse (312620836531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135638026213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135638026283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67819013106 + 67819013107.

It is an arithmetic number, because the mean of its divisors is an integer number (67819013107).

Almost surely, 2^135638026213 is an apocalyptic number.

It is an amenable number.

135638026213 is a deficient number, since it is larger than the sum of its proper divisors (1).

135638026213 is an equidigital number, since it uses as much as digits as its factorization.

135638026213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 135638026213 in words is "one hundred thirty-five billion, six hundred thirty-eight million, twenty-six thousand, two hundred thirteen".