20430135551135 has 16 divisors (see below), whose sum is σ = 25890547267200. Its totient is φ = 15433456054176.

The previous prime is 20430135551117. The next prime is 20430135551149. The reversal of 20430135551135 is 53115553103402.

It is a cyclic number.

It is not a de Polignac number, because 20430135551135 - 2⁶ = 20430135551071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350221745 + ... + 350280074.

It is an arithmetic number, because the mean of its divisors is an integer number (1618159204200).

Almost surely, 2^{20430135551135} is an apocalyptic number.

20430135551135 is a deficient number, since it is larger than the sum of its proper divisors (5460411716065).

20430135551135 is a wasteful number, since it uses less digits than its factorization.

20430135551135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700502150.

The product of its (nonzero) digits is 135000, while the sum is 38.

Adding to 20430135551135 its reverse (53115553103402), we get a palindrome (73545688654537).

The spelling of 20430135551135 in words is "twenty trillion, four hundred thirty billion, one hundred thirty-five million, five hundred fifty-one thousand, one hundred thirty-five".