20445334500 has 96 divisors (see below), whose sum is σ = 59902786944. Its totient is φ = 5418576000.

The previous prime is 20445334493. The next prime is 20445334517. The reversal of 20445334500 is 543354402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202690 + ... + 286310.

It is an arithmetic number, because the mean of its divisors is an integer number (623987364).

Almost surely, 2^20445334500 is an apocalyptic number.

20445334500 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 20445334500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29951393472).

20445334500 is an abundant number, since it is smaller than the sum of its proper divisors (39457452444).

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

20445334500 is a wasteful number, since it uses less digits than its factorization.

20445334500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83806 (or 83794 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 20445334500 its reverse (543354402), we get a palindrome (20988688902).

The spelling of 20445334500 in words is "twenty billion, four hundred forty-five million, three hundred thirty-four thousand, five hundred".