19107117568 has 160 divisors (see below), whose sum is σ = 48029604480. Its totient is φ = 7376732160.

The previous prime is 19107117551. The next prime is 19107117569. The reversal of 19107117568 is 86571170191.

It is not an unprimeable number, because it can be changed into a prime (19107117569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4452768 + ... + 4457056.

It is an arithmetic number, because the mean of its divisors is an integer number (300185028).

Almost surely, 2^19107117568 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 19107117568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24014802240).

19107117568 is an abundant number, since it is smaller than the sum of its proper divisors (28922486912).

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

19107117568 is a wasteful number, since it uses less digits than its factorization.

19107117568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438 (or 4422 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 46.

The spelling of 19107117568 in words is "nineteen billion, one hundred seven million, one hundred seventeen thousand, five hundred sixty-eight".