18331862739912 has 256 divisors, whose sum is σ = 55472002560000. Its totient is φ = 5587198767360.

The previous prime is 18331862739881. The next prime is 18331862739917. The reversal of 18331862739912 is 21993726813381.

18331862739912 is a `hidden beast` number, since 1 + 8 + 33 + 186 + 27 + 399 + 12 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18331862739912.

It is not an unprimeable number, because it can be changed into a prime (18331862739917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 317862903 + ... + 317920569.

It is an arithmetic number, because the mean of its divisors is an integer number (216687510000).

Almost surely, 2^{18331862739912} is an apocalyptic number.

18331862739912 is a gapful number since it is divisible by the number (12) 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 18331862739912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27736001280000).

18331862739912 is an abundant number, since it is smaller than the sum of its proper divisors (37140139820088).

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

18331862739912 is a wasteful number, since it uses less digits than its factorization.

18331862739912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60401 (or 60391 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 18331862739912 in words is "eighteen trillion, three hundred thirty-one billion, eight hundred sixty-two million, seven hundred thirty-nine thousand, nine hundred twelve".