19966414112 has 18 divisors (see below), whose sum is σ = 39310451523. Its totient is φ = 9982807392.

The previous prime is 19966414079. The next prime is 19966414121. The reversal of 19966414112 is 21141466991.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 9983207056 + 9983207056 = 99916^2 + 99916^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=99916.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 786839 + ... + 811817.

Almost surely, 2^19966414112 is an apocalyptic number.

It is an amenable number.

19966414112 is a deficient number, since it is larger than the sum of its proper divisors (19344037411).

19966414112 is an frugal number, since it uses more digits than its factorization.

19966414112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49968 (or 24981 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The spelling of 19966414112 in words is "nineteen billion, nine hundred sixty-six million, four hundred fourteen thousand, one hundred twelve".