55218118894848 has 576 divisors, whose sum is σ = 201019067020800. Its totient is φ = 14559604899840.

The previous prime is 55218118894843. The next prime is 55218118894903. The reversal of 55218118894848 is 84849881181255.

It is a happy number.

55218118894848 is a `hidden beast` number, since 5 + 5 + 21 + 8 + 118 + 8 + 9 + 484 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-3 number, since 3×55218118894848³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55218118894843) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3792185488 + ... + 3792200048.

It is an arithmetic number, because the mean of its divisors is an integer number (348991435800).

Almost surely, 2^{55218118894848} 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 55218118894848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100509533510400).

55218118894848 is an abundant number, since it is smaller than the sum of its proper divisors (145800948125952).

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

55218118894848 is a wasteful number, since it uses less digits than its factorization.

55218118894848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20635 (or 20615 counting only the distinct ones).

The product of its digits is 235929600, while the sum is 72.

The spelling of 55218118894848 in words is "fifty-five trillion, two hundred eighteen billion, one hundred eighteen million, eight hundred ninety-four thousand, eight hundred forty-eight".