18373288472448 has 512 divisors, whose sum is σ = 61246060001280. Its totient is φ = 4751054438400.

The previous prime is 18373288472411. The next prime is 18373288472449. The reversal of 18373288472448 is 84427488237381.

It is a super-4 number, since 4×18373288472448⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18373288472449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 675698533 + ... + 675725723.

It is an arithmetic number, because the mean of its divisors is an integer number (119621210940).

Almost surely, 2^{18373288472448} 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 18373288472448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30623030000640).

18373288472448 is an abundant number, since it is smaller than the sum of its proper divisors (42872771528832).

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

18373288472448 is a wasteful number, since it uses less digits than its factorization.

18373288472448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27606 (or 27594 counting only the distinct ones).

The product of its digits is 462422016, while the sum is 69.

The spelling of 18373288472448 in words is "eighteen trillion, three hundred seventy-three billion, two hundred eighty-eight million, four hundred seventy-two thousand, four hundred forty-eight".