18051984633984 has 256 divisors, whose sum is σ = 55607992473600. Its totient is φ = 5081819258880.

The previous prime is 18051984633971. The next prime is 18051984634087. The reversal of 18051984633984 is 48933648915081.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307045039 + ... + 307103825.

It is an arithmetic number, because the mean of its divisors is an integer number (217218720600).

Almost surely, 2^{18051984633984} is an apocalyptic number.

18051984633984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18051984633984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27803996236800).

18051984633984 is an abundant number, since it is smaller than the sum of its proper divisors (37556007839616).

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

18051984633984 is a wasteful number, since it uses less digits than its factorization.

18051984633984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60491 (or 60479 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 69.

The spelling of 18051984633984 in words is "eighteen trillion, fifty-one billion, nine hundred eighty-four million, six hundred thirty-three thousand, nine hundred eighty-four".