218187484368 has 80 divisors (see below), whose sum is σ = 682065095040. Its totient is φ = 58672263168.

The previous prime is 218187484363. The next prime is 218187484381. The reversal of 218187484368 is 863484781812.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218187484363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19093333 + ... + 19104756.

It is an arithmetic number, because the mean of its divisors is an integer number (8525813688).

Almost surely, 2^218187484368 is an apocalyptic number.

218187484368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

218187484368 is an abundant number, since it is smaller than the sum of its proper divisors (463877610672).

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

218187484368 is a wasteful number, since it uses less digits than its factorization.

218187484368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38198124 (or 38198118 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 60.

The spelling of 218187484368 in words is "two hundred eighteen billion, one hundred eighty-seven million, four hundred eighty-four thousand, three hundred sixty-eight".