135510502344221 has 8 divisors (see below), whose sum is σ = 136523983516320. Its totient is φ = 134498924425008.

The previous prime is 135510502344193. The next prime is 135510502344241. The reversal of 135510502344221 is 122443205015531.

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 135510502344221 - 2¹⁸ = 135510502082077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135510502344241) 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, 475670291 + ... + 475955088.

It is an arithmetic number, because the mean of its divisors is an integer number (17065497939540).

Almost surely, 2^{135510502344221} is an apocalyptic number.

It is an amenable number.

135510502344221 is a deficient number, since it is larger than the sum of its proper divisors (1013481172099).

135510502344221 is an equidigital number, since it uses as much as digits as its factorization.

135510502344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951626443.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 135510502344221 its reverse (122443205015531), we get a palindrome (257953707359752).

The spelling of 135510502344221 in words is "one hundred thirty-five trillion, five hundred ten billion, five hundred two million, three hundred forty-four thousand, two hundred twenty-one".