20791738848 has 96 divisors (see below), whose sum is σ = 56510213760. Its totient is φ = 6685683200.

The previous prime is 20791738811. The next prime is 20791738853. The reversal of 20791738848 is 84883719702.

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

It is a congruent number.

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, 4037011 + ... + 4042157.

It is an arithmetic number, because the mean of its divisors is an integer number (588648060).

Almost surely, 2^20791738848 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 20791738848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28255106880).

20791738848 is an abundant number, since it is smaller than the sum of its proper divisors (35718474912).

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

20791738848 is a wasteful number, since it uses less digits than its factorization.

20791738848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640 (or 6632 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 57.

The spelling of 20791738848 in words is "twenty billion, seven hundred ninety-one million, seven hundred thirty-eight thousand, eight hundred forty-eight".