19943007104 has 128 divisors (see below), whose sum is σ = 41793822720. Its totient is φ = 9469716480.

The previous prime is 19943007103. The next prime is 19943007127. The reversal of 19943007104 is 40170034991.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19943007103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42704279 + ... + 42704745.

It is an arithmetic number, because the mean of its divisors is an integer number (326514240).

Almost surely, 2^19943007104 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 19943007104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20896911360).

19943007104 is an abundant number, since it is smaller than the sum of its proper divisors (21850815616).

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

19943007104 is a wasteful number, since it uses less digits than its factorization.

19943007104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 19943007104 in words is "nineteen billion, nine hundred forty-three million, seven thousand, one hundred four".