135206443122565 has 32 divisors (see below), whose sum is σ = 166266898560000. Its totient is φ = 105502024900608.

The previous prime is 135206443122557. The next prime is 135206443122601. The reversal of 135206443122565 is 565221344602531.

It is a cyclic number.

It is not a de Polignac number, because 135206443122565 - 2³ = 135206443122557 is a prime.

It is a super-2 number, since 2×135206443122565² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87763441 + ... + 89290729.

It is an arithmetic number, because the mean of its divisors is an integer number (5195840580000).

Almost surely, 2^{135206443122565} is an apocalyptic number.

It is an amenable number.

135206443122565 is a deficient number, since it is larger than the sum of its proper divisors (31060455437435).

135206443122565 is a wasteful number, since it uses less digits than its factorization.

135206443122565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528629.

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 135206443122565 in words is "one hundred thirty-five trillion, two hundred six billion, four hundred forty-three million, one hundred twenty-two thousand, five hundred sixty-five".