19659563196 has 96 divisors (see below), whose sum is σ = 56499179520. Its totient is φ = 5181179904.

The previous prime is 19659563179. The next prime is 19659563197. The reversal of 19659563196 is 69136595691.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19659563197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1705420 + ... + 1716908.

It is an arithmetic number, because the mean of its divisors is an integer number (588533120).

Almost surely, 2^19659563196 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 19659563196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28249589760).

19659563196 is an abundant number, since it is smaller than the sum of its proper divisors (36839616324).

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

19659563196 is a wasteful number, since it uses less digits than its factorization.

19659563196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13083 (or 13081 counting only the distinct ones).

The product of its digits is 11809800, while the sum is 60.

The spelling of 19659563196 in words is "nineteen billion, six hundred fifty-nine million, five hundred sixty-three thousand, one hundred ninety-six".