218220241338 has 48 divisors (see below), whose sum is σ = 515869473600. Its totient is φ = 66117579840.

The previous prime is 218220241333. The next prime is 218220241429. The reversal of 218220241338 is 833142022812.

218220241338 is a `hidden beast` number, since 2 + 1 + 8 + 2 + 202 + 413 + 38 = 666.

It is a super-2 number, since 2×218220241338² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (218220241333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1323798 + ... + 1479486.

It is an arithmetic number, because the mean of its divisors is an integer number (10747280700).

Almost surely, 2^218220241338 is an apocalyptic number.

218220241338 is an abundant number, since it is smaller than the sum of its proper divisors (297649232262).

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

218220241338 is a wasteful number, since it uses less digits than its factorization.

218220241338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162787 (or 162784 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 218220241338 in words is "two hundred eighteen billion, two hundred twenty million, two hundred forty-one thousand, three hundred thirty-eight".