135657543523519 has 2 divisors, whose sum is σ = 135657543523520. Its totient is φ = 135657543523518.

The previous prime is 135657543523501. The next prime is 135657543523559. The reversal of 135657543523519 is 915325345756531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135657543523519 - 2¹⁵ = 135657543490751 is a prime.

It is a super-2 number, since 2×135657543523519² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135657543523559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67828771761759 + 67828771761760.

It is an arithmetic number, because the mean of its divisors is an integer number (67828771761760).

Almost surely, 2^{135657543523519} is an apocalyptic number.

135657543523519 is a deficient number, since it is larger than the sum of its proper divisors (1).

135657543523519 is an equidigital number, since it uses as much as digits as its factorization.

135657543523519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 255150000, while the sum is 64.

The spelling of 135657543523519 in words is "one hundred thirty-five trillion, six hundred fifty-seven billion, five hundred forty-three million, five hundred twenty-three thousand, five hundred nineteen".