135420018289 has 4 divisors (see below), whose sum is σ = 135447091056. Its totient is φ = 135392945524.

The previous prime is 135420018269. The next prime is 135420018299. The reversal of 135420018289 is 982810024531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982810024531 = 463 ⋅2122699837.

It is a cyclic number.

It is not a de Polignac number, because 135420018289 - 2⁷ = 135420018161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135420018269) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13528879 + ... + 13538884.

It is an arithmetic number, because the mean of its divisors is an integer number (33861772764).

Almost surely, 2^135420018289 is an apocalyptic number.

It is an amenable number.

135420018289 is a deficient number, since it is larger than the sum of its proper divisors (27072767).

135420018289 is an equidigital number, since it uses as much as digits as its factorization.

135420018289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27072766.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 135420018289 in words is "one hundred thirty-five billion, four hundred twenty million, eighteen thousand, two hundred eighty-nine".