135505501442231 has 8 divisors (see below), whose sum is σ = 143611640844624. Its totient is φ = 127414387323520.

The previous prime is 135505501442153. The next prime is 135505501442237. The reversal of 135505501442231 is 132244105505531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135505501442231 is a prime.

It is a super-2 number, since 2×135505501442231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135505501442237) 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, 3756302345 + ... + 3756338418.

It is an arithmetic number, because the mean of its divisors is an integer number (17951455105578).

Almost surely, 2^{135505501442231} is an apocalyptic number.

135505501442231 is a deficient number, since it is larger than the sum of its proper divisors (8106139402393).

135505501442231 is a wasteful number, since it uses less digits than its factorization.

135505501442231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7512641841.

The product of its (nonzero) digits is 360000, while the sum is 41.

Adding to 135505501442231 its reverse (132244105505531), we get a palindrome (267749606947762).

The spelling of 135505501442231 in words is "one hundred thirty-five trillion, five hundred five billion, five hundred one million, four hundred forty-two thousand, two hundred thirty-one".