19675518944 has 48 divisors (see below), whose sum is σ = 39922565760. Its totient is φ = 9539752320.

The previous prime is 19675518943. The next prime is 19675518949. The reversal of 19675518944 is 44981557691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19675518943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139829 + ... + 242699.

It is an arithmetic number, because the mean of its divisors is an integer number (831720120).

Almost surely, 2^19675518944 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 19675518944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19961282880).

19675518944 is an abundant number, since it is smaller than the sum of its proper divisors (20247046816).

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

19675518944 is a wasteful number, since it uses less digits than its factorization.

19675518944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103063 (or 103055 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 59.

The spelling of 19675518944 in words is "nineteen billion, six hundred seventy-five million, five hundred eighteen thousand, nine hundred forty-four".