19868331303712 has 72 divisors (see below), whose sum is σ = 40097424421908. Its totient is φ = 9690821191680.

The previous prime is 19868331303707. The next prime is 19868331303761. The reversal of 19868331303712 is 21730313386891.

It can be written as a sum of positive squares in 6 ways, for example, as 1833326832016 + 18035004471696 = 1354004^2 + 4246764^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 783037458 + ... + 783062830.

Almost surely, 2^{19868331303712} 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 19868331303712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20048712210954).

19868331303712 is an abundant number, since it is smaller than the sum of its proper divisors (20229093118196).

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

19868331303712 is a wasteful number, since it uses less digits than its factorization.

19868331303712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40022 (or 39973 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 19868331303712 in words is "nineteen trillion, eight hundred sixty-eight billion, three hundred thirty-one million, three hundred three thousand, seven hundred twelve".