20593601688 has 256 divisors, whose sum is σ = 59082670080. Its totient is φ = 5927040000.

The previous prime is 20593601681. The next prime is 20593601731. The reversal of 20593601688 is 88610639502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20593601681) 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, 97599903 + ... + 97600113.

It is an arithmetic number, because the mean of its divisors is an integer number (230791680).

Almost surely, 2^20593601688 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 20593601688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29541335040).

20593601688 is an abundant number, since it is smaller than the sum of its proper divisors (38489068392).

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

20593601688 is a wasteful number, since it uses less digits than its factorization.

20593601688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 20593601688 in words is "twenty billion, five hundred ninety-three million, six hundred one thousand, six hundred eighty-eight".