20389996846080 has 528 divisors, whose sum is σ = 75062550345120. Its totient is φ = 5107938361344.

The previous prime is 20389996846067. The next prime is 20389996846081. The reversal of 20389996846080 is 8064869998302.

It is a happy number.

20389996846080 is a `hidden beast` number, since 2 + 0 + 3 + 8 + 9 + 9 + 9 + 6 + 8 + 4 + 608 + 0 = 666.

It is a super-2 number, since 2×20389996846080² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20389996846081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49237647 + ... + 49650033.

Almost surely, 2^{20389996846080} is an apocalyptic number.

20389996846080 is a gapful number since it is divisible by the number (20) 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 20389996846080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37531275172560).

20389996846080 is an abundant number, since it is smaller than the sum of its proper divisors (54672553499040).

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

20389996846080 is a wasteful number, since it uses less digits than its factorization.

20389996846080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412484 (or 412463 counting only the distinct ones).

The product of its (nonzero) digits is 322486272, while the sum is 72.

The spelling of 20389996846080 in words is "twenty trillion, three hundred eighty-nine billion, nine hundred ninety-six million, eight hundred forty-six thousand, eighty".