20045443224 has 64 divisors (see below), whose sum is σ = 51523776000. Its totient is φ = 6495703424.

The previous prime is 20045443199. The next prime is 20045443273. The reversal of 20045443224 is 42234454002.

It is a junction number, because it is equal to n+sod(n) for n = 20045443191 and 20045443200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108439 + ... + 227705.

It is an arithmetic number, because the mean of its divisors is an integer number (805059000).

Almost surely, 2^20045443224 is an apocalyptic number.

20045443224 is a gapful number since it is divisible by the number (24) 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 20045443224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25761888000).

20045443224 is an abundant number, since it is smaller than the sum of its proper divisors (31478332776).

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

20045443224 is a wasteful number, since it uses less digits than its factorization.

20045443224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119472 (or 119468 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 20045443224 its reverse (42234454002), we get a palindrome (62279897226).

The spelling of 20045443224 in words is "twenty billion, forty-five million, four hundred forty-three thousand, two hundred twenty-four".