16218504481068 has 36 divisors (see below), whose sum is σ = 41046348175560. Its totient is φ = 5399631066816.

The previous prime is 16218504481051. The next prime is 16218504481093. The reversal of 16218504481068 is 86018440581261.

16218504481068 is a `hidden beast` number, since 1 + 6 + 2 + 185 + 0 + 448 + 10 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272348713 + ... + 272408256.

It is an arithmetic number, because the mean of its divisors is an integer number (1140176338210).

Almost surely, 2^{16218504481068} is an apocalyptic number.

16218504481068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16218504481068 is an abundant number, since it is smaller than the sum of its proper divisors (24827843694492).

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

16218504481068 is a wasteful number, since it uses less digits than its factorization.

16218504481068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544757806 (or 544757801 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 54.

The spelling of 16218504481068 in words is "sixteen trillion, two hundred eighteen billion, five hundred four million, four hundred eighty-one thousand, sixty-eight".