218449254848 has 112 divisors (see below), whose sum is σ = 475395243264. Its totient is φ = 98771312640.

The previous prime is 218449254811. The next prime is 218449254923. The reversal of 218449254848 is 848452944812.

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, 135935261 + ... + 135936867.

Almost surely, 2^218449254848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218449254848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237697621632).

218449254848 is an abundant number, since it is smaller than the sum of its proper divisors (256945988416).

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

218449254848 is a wasteful number, since it uses less digits than its factorization.

218449254848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530 (or 2520 counting only the distinct ones).

The product of its digits is 23592960, while the sum is 59.

The spelling of 218449254848 in words is "two hundred eighteen billion, four hundred forty-nine million, two hundred fifty-four thousand, eight hundred forty-eight".