19716807168 has 120 divisors (see below), whose sum is σ = 57754258848. Its totient is φ = 6474074112.

The previous prime is 19716807133. The next prime is 19716807169. The reversal of 19716807168 is 86170861791.

It is not an unprimeable number, because it can be changed into a prime (19716807169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276805 + ... + 340667.

Almost surely, 2^19716807168 is an apocalyptic number.

19716807168 is a gapful number since it is divisible by the number (18) 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 19716807168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28877129424).

19716807168 is an abundant number, since it is smaller than the sum of its proper divisors (38037451680).

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

19716807168 is an equidigital number, since it uses as much as digits as its factorization.

19716807168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63954 (or 63935 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 19716807168 in words is "nineteen billion, seven hundred sixteen million, eight hundred seven thousand, one hundred sixty-eight".