19681608960000 has 1920 divisors, whose sum is σ = 79691855443200. Its totient is φ = 4768727040000.

The previous prime is 19681608959977. The next prime is 19681608960059. The reversal of 19681608960000 is 6980618691.

19681608960000 is a `hidden beast` number, since 19 + 6 + 8 + 16 + 0 + 8 + 9 + 600 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 31898879692 + ... + 31898880308.

It is an arithmetic number, because the mean of its divisors is an integer number (41506174710).

Almost surely, 2^{19681608960000} is an apocalyptic number.

19681608960000 is a gapful number since it is divisible by the number (10) 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 19681608960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39845927721600).

19681608960000 is an abundant number, since it is smaller than the sum of its proper divisors (60010246483200).

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

19681608960000 is an equidigital number, since it uses as much as digits as its factorization.

19681608960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 19681608960000 in words is "nineteen trillion, six hundred eighty-one billion, six hundred eight million, nine hundred sixty thousand".