19803789431712 has 1920 divisors, whose sum is σ = 73144642830336. Its totient is φ = 5173217280000.

The previous prime is 19803789431609. The next prime is 19803789431749. The reversal of 19803789431712 is 21713498730891.

19803789431712 is a `hidden beast` number, since 1 + 9 + 8 + 0 + 378 + 94 + 3 + 171 + 2 = 666.

It is a super-2 number, since 2×19803789431712² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19803789431712.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 59830179387 + ... + 59830179717.

Almost surely, 2^{19803789431712} is an apocalyptic number.

19803789431712 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 19803789431712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36572321415168).

19803789431712 is an abundant number, since it is smaller than the sum of its proper divisors (53340853398624).

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

19803789431712 is a wasteful number, since it uses less digits than its factorization.

19803789431712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 19803789431712 in words is "nineteen trillion, eight hundred three billion, seven hundred eighty-nine million, four hundred thirty-one thousand, seven hundred twelve".