6389423827920 has 320 divisors, whose sum is σ = 25185553735680. Its totient is φ = 1458492480000.

The previous prime is 6389423827909. The next prime is 6389423827921. The reversal of 6389423827920 is 297283249836.

6389423827920 is a `hidden beast` number, since 63 + 8 + 9 + 423 + 82 + 79 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389423827921) 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, 11073775 + ... + 11636465.

It is an arithmetic number, because the mean of its divisors is an integer number (78704855424).

Almost surely, 2^{6389423827920} is an apocalyptic number.

6389423827920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6389423827920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12592776867840).

6389423827920 is an abundant number, since it is smaller than the sum of its proper divisors (18796129907760).

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

6389423827920 is a wasteful number, since it uses less digits than its factorization.

6389423827920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563471 (or 563459 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 6389423827920 in words is "six trillion, three hundred eighty-nine billion, four hundred twenty-three million, eight hundred twenty-seven thousand, nine hundred twenty".