20535020352 has 504 divisors, whose sum is σ = 75536552000. Its totient is φ = 5327562240.

The previous prime is 20535020329. The next prime is 20535020357. The reversal of 20535020352 is 25302053502.

It is a tau number, because it is divible by the number of its divisors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535020357) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 23905299 + ... + 23906157.

Almost surely, 2^20535020352 is an apocalyptic number.

20535020352 is a gapful number since it is divisible by the number (22) 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 20535020352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37768276000).

20535020352 is an abundant number, since it is smaller than the sum of its proper divisors (55001531648).

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

20535020352 is a wasteful number, since it uses less digits than its factorization.

20535020352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

Adding to 20535020352 its reverse (25302053502), we get a palindrome (45837073854).

The spelling of 20535020352 in words is "twenty billion, five hundred thirty-five million, twenty thousand, three hundred fifty-two".