135604221023413 has 8 divisors (see below), whose sum is σ = 141091097023800. Its totient is φ = 130171402915008.

The previous prime is 135604221023399. The next prime is 135604221023477. The reversal of 135604221023413 is 314320122406531.

It can be written as a sum of positive squares in 4 ways, for example, as 28631991686769 + 106972229336644 = 5350887^2 + 10342738^2 .

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 135604221023413 - 2⁹ = 135604221022901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135604221323413) 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, 13514467878 + ... + 13514477911.

It is an arithmetic number, because the mean of its divisors is an integer number (17636387127975).

Almost surely, 2^{135604221023413} is an apocalyptic number.

It is an amenable number.

135604221023413 is a deficient number, since it is larger than the sum of its proper divisors (5486876000387).

135604221023413 is a wasteful number, since it uses less digits than its factorization.

135604221023413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27028945991.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 135604221023413 its reverse (314320122406531), we get a palindrome (449924343429944).

The spelling of 135604221023413 in words is "one hundred thirty-five trillion, six hundred four billion, two hundred twenty-one million, twenty-three thousand, four hundred thirteen".