135581455589 has 8 divisors (see below), whose sum is σ = 136151432280. Its totient is φ = 135011968000.

The previous prime is 135581455543. The next prime is 135581455609. The reversal of 135581455589 is 985554185531.

It can be written as a sum of positive squares in 4 ways, for example, as 5588758564 + 129992697025 = 74758^2 + 360545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135581455589 - 2⁸ = 135581455333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135581955589) 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 in 7 ways as a sum of consecutive naturals, for example, 438689 + ... + 680889.

It is an arithmetic number, because the mean of its divisors is an integer number (17018929035).

Almost surely, 2^135581455589 is an apocalyptic number.

It is an amenable number.

135581455589 is a deficient number, since it is larger than the sum of its proper divisors (569976691).

135581455589 is a wasteful number, since it uses less digits than its factorization.

135581455589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244551.

The product of its digits is 21600000, while the sum is 59.

The spelling of 135581455589 in words is "one hundred thirty-five billion, five hundred eighty-one million, four hundred fifty-five thousand, five hundred eighty-nine".