218838458135 has 16 divisors (see below), whose sum is σ = 290105763840. Its totient is φ = 157140615840.

The previous prime is 218838458101. The next prime is 218838458173. The reversal of 218838458135 is 531854838812.

It is not a de Polignac number, because 218838458135 - 2⁸ = 218838457879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25178447 + ... + 25187136.

It is an arithmetic number, because the mean of its divisors is an integer number (18131610240).

Almost surely, 2^218838458135 is an apocalyptic number.

218838458135 is a deficient number, since it is larger than the sum of its proper divisors (71267305705).

218838458135 is a wasteful number, since it uses less digits than its factorization.

218838458135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50365678.

The product of its digits is 7372800, while the sum is 56.

The spelling of 218838458135 in words is "two hundred eighteen billion, eight hundred thirty-eight million, four hundred fifty-eight thousand, one hundred thirty-five".