20441243100 has 144 divisors (see below), whose sum is σ = 64963342080. Its totient is φ = 4939545600.

The previous prime is 20441243063. The next prime is 20441243101. The reversal of 20441243100 is 134214402.

It is a super-2 number, since 2×20441243100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441243101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53140 + ... + 209060.

It is an arithmetic number, because the mean of its divisors is an integer number (451134320).

Almost surely, 2^20441243100 is an apocalyptic number.

20441243100 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 20441243100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32481671040).

20441243100 is an abundant number, since it is smaller than the sum of its proper divisors (44522098980).

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

20441243100 is a wasteful number, since it uses less digits than its factorization.

20441243100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155980 (or 155973 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20441243100 its reverse (134214402), we get a palindrome (20575457502).

The spelling of 20441243100 in words is "twenty billion, four hundred forty-one million, two hundred forty-three thousand, one hundred".