20332178693728 has 96 divisors (see below), whose sum is σ = 44848054611360. Its totient is φ = 8993306112000.

The previous prime is 20332178693711. The next prime is 20332178693731. The reversal of 20332178693728 is 82739687123302.

It is a happy number.

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, 3803218 + ... + 7424878.

It is an arithmetic number, because the mean of its divisors is an integer number (467167235535).

Almost surely, 2^{20332178693728} 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 20332178693728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22424027305680).

20332178693728 is an abundant number, since it is smaller than the sum of its proper divisors (24515875917632).

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

20332178693728 is a wasteful number, since it uses less digits than its factorization.

20332178693728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622112 (or 3622104 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 61.

The spelling of 20332178693728 in words is "twenty trillion, three hundred thirty-two billion, one hundred seventy-eight million, six hundred ninety-three thousand, seven hundred twenty-eight".