19732644768 has 96 divisors (see below), whose sum is σ = 53545508352. Its totient is φ = 6356275200.

The previous prime is 19732644761. The next prime is 19732644791. The reversal of 19732644768 is 86744623791.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (19732644761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2260380 + ... + 2269092.

It is an arithmetic number, because the mean of its divisors is an integer number (557765712).

Almost surely, 2^19732644768 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 19732644768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26772754176).

19732644768 is an abundant number, since it is smaller than the sum of its proper divisors (33812863584).

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

19732644768 is a wasteful number, since it uses less digits than its factorization.

19732644768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518 (or 9510 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 57.

The spelling of 19732644768 in words is "nineteen billion, seven hundred thirty-two million, six hundred forty-four thousand, seven hundred sixty-eight".