135420511110423 has 16 divisors (see below), whose sum is σ = 225114615872256. Its totient is φ = 70348317459840.

The previous prime is 135420511110371. The next prime is 135420511110433. The reversal of 135420511110423 is 324011115024531.

It is not a de Polignac number, because 135420511110423 - 2⁶ = 135420511110359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135420511110433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293117989186 + ... + 293117989647.

It is an arithmetic number, because the mean of its divisors is an integer number (14069663492016).

Almost surely, 2^{135420511110423} is an apocalyptic number.

135420511110423 is a deficient number, since it is larger than the sum of its proper divisors (89694104761833).

135420511110423 is a wasteful number, since it uses less digits than its factorization.

135420511110423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586235978854.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 135420511110423 its reverse (324011115024531), we get a palindrome (459431626134954).

The spelling of 135420511110423 in words is "one hundred thirty-five trillion, four hundred twenty billion, five hundred eleven million, one hundred ten thousand, four hundred twenty-three".