135971529017 has 2 divisors, whose sum is σ = 135971529018. Its totient is φ = 135971529016.

The previous prime is 135971529011. The next prime is 135971529049. The reversal of 135971529017 is 710925179531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121226526976 + 14745002041 = 348176^2 + 121429^2 .

It is a cyclic number.

It is not a de Polignac number, because 135971529017 - 2²⁶ = 135904420153 is a prime.

It is not a weakly prime, because it can be changed into another prime (135971529011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67985764508 + 67985764509.

It is an arithmetic number, because the mean of its divisors is an integer number (67985764509).

Almost surely, 2^135971529017 is an apocalyptic number.

It is an amenable number.

135971529017 is a deficient number, since it is larger than the sum of its proper divisors (1).

135971529017 is an equidigital number, since it uses as much as digits as its factorization.

135971529017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 595350, while the sum is 50.

The spelling of 135971529017 in words is "one hundred thirty-five billion, nine hundred seventy-one million, five hundred twenty-nine thousand, seventeen".