19686968960 has 128 divisors (see below), whose sum is σ = 48884601600. Its totient is φ = 7575924736.

The previous prime is 19686968947. The next prime is 19686968989. The reversal of 19686968960 is 6986968691.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769174 + ... + 1780266.

It is an arithmetic number, because the mean of its divisors is an integer number (381910950).

Almost surely, 2^19686968960 is an apocalyptic number.

19686968960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19686968960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24442300800).

19686968960 is an abundant number, since it is smaller than the sum of its proper divisors (29197632640).

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

19686968960 is a wasteful number, since it uses less digits than its factorization.

19686968960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11218 (or 11206 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 68.

The spelling of 19686968960 in words is "nineteen billion, six hundred eighty-six million, nine hundred sixty-eight thousand, nine hundred sixty".