135544243441 has 8 divisors (see below), whose sum is σ = 141159249000. Its totient is φ = 129991975680.

The previous prime is 135544243433. The next prime is 135544243451. The reversal of 135544243441 is 144342445531.

It can be written as a sum of positive squares in 4 ways, for example, as 90801841 + 135453441600 = 9529^2 + 368040^2 .

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

It is not a de Polignac number, because 135544243441 - 2³ = 135544243433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135544243394 and 135544243403.

It is not an unprimeable number, because it can be changed into a prime (135544243451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15680040 + ... + 15688681.

It is an arithmetic number, because the mean of its divisors is an integer number (17644906125).

Almost surely, 2^135544243441 is an apocalyptic number.

It is an amenable number.

135544243441 is a deficient number, since it is larger than the sum of its proper divisors (5615005559).

135544243441 is a wasteful number, since it uses less digits than its factorization.

135544243441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31368899.

The product of its digits is 460800, while the sum is 40.

Adding to 135544243441 its reverse (144342445531), we get a palindrome (279886688972).

The spelling of 135544243441 in words is "one hundred thirty-five billion, five hundred forty-four million, two hundred forty-three thousand, four hundred forty-one".