20143040220 has 144 divisors (see below), whose sum is σ = 61546867200. Its totient is φ = 5332399488.

The previous prime is 20143040213. The next prime is 20143040231. The reversal of 20143040220 is 2204034102.

20143040220 is a `hidden beast` number, since 201 + 43 + 0 + 402 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20143040193 and 20143040202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24474729 + ... + 24475551.

It is an arithmetic number, because the mean of its divisors is an integer number (427408800).

Almost surely, 2^20143040220 is an apocalyptic number.

20143040220 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 20143040220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30773433600).

20143040220 is an abundant number, since it is smaller than the sum of its proper divisors (41403826980).

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

20143040220 is a wasteful number, since it uses less digits than its factorization.

20143040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20143040220 its reverse (2204034102), we get a palindrome (22347074322).

The spelling of 20143040220 in words is "twenty billion, one hundred forty-three million, forty thousand, two hundred twenty".