135206315526461 has 2 divisors, whose sum is σ = 135206315526462. Its totient is φ = 135206315526460.

The previous prime is 135206315526389. The next prime is 135206315526677. The reversal of 135206315526461 is 164625513602531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110733318540100 + 24472996986361 = 10522990^2 + 4947019^2 .

It is a cyclic number.

It is not a de Polignac number, because 135206315526461 - 2³⁰ = 135205241784637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135206315126461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67603157763230 + 67603157763231.

It is an arithmetic number, because the mean of its divisors is an integer number (67603157763231).

Almost surely, 2^{135206315526461} is an apocalyptic number.

It is an amenable number.

135206315526461 is a deficient number, since it is larger than the sum of its proper divisors (1).

135206315526461 is an equidigital number, since it uses as much as digits as its factorization.

135206315526461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 135206315526461 in words is "one hundred thirty-five trillion, two hundred six billion, three hundred fifteen million, five hundred twenty-six thousand, four hundred sixty-one".