135544330052401 has 4 divisors (see below), whose sum is σ = 135544497504804. Its totient is φ = 135544162600000.

The previous prime is 135544330052393. The next prime is 135544330052449. The reversal of 135544330052401 is 104250033445531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80460917940001 + 55083412112400 = 8970001^2 + 7421820^2 .

It is a cyclic number.

It is not a de Polignac number, because 135544330052401 - 2³ = 135544330052393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135544330052471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82506100 + ... + 84132901.

It is an arithmetic number, because the mean of its divisors is an integer number (33886124376201).

Almost surely, 2^{135544330052401} is an apocalyptic number.

It is an amenable number.

135544330052401 is a deficient number, since it is larger than the sum of its proper divisors (167452403).

135544330052401 is an equidigital number, since it uses as much as digits as its factorization.

135544330052401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167452402.

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 135544330052401 its reverse (104250033445531), we get a palindrome (239794363497932).

The spelling of 135544330052401 in words is "one hundred thirty-five trillion, five hundred forty-four billion, three hundred thirty million, fifty-two thousand, four hundred one".