20001034560 has 224 divisors, whose sum is σ = 69215690880. Its totient is φ = 4863762432.

The previous prime is 20001034457. The next prime is 20001034567. The reversal of 20001034560 is 6543010002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001034567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1026186 + ... + 1045494.

It is an arithmetic number, because the mean of its divisors is an integer number (308998620).

Almost surely, 2^20001034560 is an apocalyptic number.

20001034560 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 20001034560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34607845440).

20001034560 is an abundant number, since it is smaller than the sum of its proper divisors (49214656320).

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

20001034560 is a wasteful number, since it uses less digits than its factorization.

20001034560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19425 (or 19415 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20001034560 its reverse (6543010002), we get a palindrome (26544044562).

The spelling of 20001034560 in words is "twenty billion, one million, thirty-four thousand, five hundred sixty".