135405574380218 has 8 divisors (see below), whose sum is σ = 203690333954100. Its totient is φ = 67508796395520.

The previous prime is 135405574380191. The next prime is 135405574380257. The reversal of 135405574380218 is 812083475504531.

It can be written as a sum of positive squares in 2 ways, for example, as 107541608031529 + 27863966348689 = 10370227^2 + 5278633^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96995396423 + ... + 96995397818.

Almost surely, 2^{135405574380218} is an apocalyptic number.

135405574380218 is a deficient number, since it is larger than the sum of its proper divisors (68284759573882).

135405574380218 is a wasteful number, since it uses less digits than its factorization.

135405574380218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193990794592.

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 135405574380218 in words is "one hundred thirty-five trillion, four hundred five billion, five hundred seventy-four million, three hundred eighty thousand, two hundred eighteen".