20450144000 has 576 divisors, whose sum is σ = 61872370560. Its totient is φ = 6635520000.

The previous prime is 20450143979. The next prime is 20450144003. The reversal of 20450144000 is 44105402.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450144003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 187615946 + ... + 187616054.

It is an arithmetic number, because the mean of its divisors is an integer number (107417310).

Almost surely, 2^20450144000 is an apocalyptic number.

20450144000 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 20450144000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30936185280).

20450144000 is an abundant number, since it is smaller than the sum of its proper divisors (41422226560).

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

20450144000 is a wasteful number, since it uses less digits than its factorization.

20450144000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 20450144000 its reverse (44105402), we get a palindrome (20494249402).

The spelling of 20450144000 in words is "twenty billion, four hundred fifty million, one hundred forty-four thousand".