218135455338 has 16 divisors (see below), whose sum is σ = 446416746336. Its totient is φ = 71020845840.

The previous prime is 218135455297. The next prime is 218135455393. The reversal of 218135455338 is 833554531812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422742873 + ... + 422743388.

It is an arithmetic number, because the mean of its divisors is an integer number (27901046646).

Almost surely, 2^218135455338 is an apocalyptic number.

218135455338 is an abundant number, since it is smaller than the sum of its proper divisors (228281290998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218135455338 is a wasteful number, since it uses less digits than its factorization.

218135455338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845486309.

The product of its digits is 1728000, while the sum is 48.

The spelling of 218135455338 in words is "two hundred eighteen billion, one hundred thirty-five million, four hundred fifty-five thousand, three hundred thirty-eight".