18747989704704 has 480 divisors, whose sum is σ = 55298700656640. Its totient is φ = 5614298726400.

The previous prime is 18747989704679. The next prime is 18747989704723. The reversal of 18747989704704 is 40740798974781.

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, 3584013769 + ... + 3584018999.

It is an arithmetic number, because the mean of its divisors is an integer number (115205626368).

Almost surely, 2^{18747989704704} 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 18747989704704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27649350328320).

18747989704704 is an abundant number, since it is smaller than the sum of its proper divisors (36550710951936).

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

18747989704704 is an equidigital number, since it uses as much as digits as its factorization.

18747989704704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425 (or 5399 counting only the distinct ones).

The product of its (nonzero) digits is 796594176, while the sum is 75.

The spelling of 18747989704704 in words is "eighteen trillion, seven hundred forty-seven billion, nine hundred eighty-nine million, seven hundred four thousand, seven hundred four".