135444042441 has 6 divisors (see below), whose sum is σ = 195641394650. Its totient is φ = 90296028288.

The previous prime is 135444042427. The next prime is 135444042451. The reversal of 135444042441 is 144240444531.

135444042441 is a `hidden beast` number, since 1 + 3 + 5 + 4 + 4 + 404 + 244 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106474300416 + 28969742025 = 326304^2 + 170205^2 .

It is not a de Polignac number, because 135444042441 - 2²⁵ = 135410488009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135444042396 and 135444042405.

It is not an unprimeable number, because it can be changed into a prime (135444042451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7524669016 + ... + 7524669033.

Almost surely, 2^135444042441 is an apocalyptic number.

It is an amenable number.

135444042441 is a deficient number, since it is larger than the sum of its proper divisors (60197352209).

135444042441 is a wasteful number, since it uses less digits than its factorization.

135444042441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15049338055 (or 15049338052 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

Adding to 135444042441 its reverse (144240444531), we get a palindrome (279684486972).

The spelling of 135444042441 in words is "one hundred thirty-five billion, four hundred forty-four million, forty-two thousand, four hundred forty-one".