17993345648 has 80 divisors (see below), whose sum is σ = 38427540480. Its totient is φ = 8123841792.

The previous prime is 17993345621. The next prime is 17993345659. The reversal of 17993345648 is 84654339971.

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, 2044265 + ... + 2053047.

It is an arithmetic number, because the mean of its divisors is an integer number (480344256).

Almost surely, 2^17993345648 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 17993345648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19213770240).

17993345648 is an abundant number, since it is smaller than the sum of its proper divisors (20434194832).

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

17993345648 is a wasteful number, since it uses less digits than its factorization.

17993345648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126 (or 9120 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 59.

The spelling of 17993345648 in words is "seventeen billion, nine hundred ninety-three million, three hundred forty-five thousand, six hundred forty-eight".