20243043040220 has 384 divisors, whose sum is σ = 60469951610880. Its totient is φ = 5478345031680.

The previous prime is 20243043040201. The next prime is 20243043040261. The reversal of 20243043040220 is 2204034034202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 20243043040220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 608851637 + ... + 608884883.

It is an arithmetic number, because the mean of its divisors is an integer number (157473832320).

Almost surely, 2^{20243043040220} is an apocalyptic number.

20243043040220 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 20243043040220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30234975805440).

20243043040220 is an abundant number, since it is smaller than the sum of its proper divisors (40226908570660).

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

20243043040220 is a wasteful number, since it uses less digits than its factorization.

20243043040220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35093 (or 35091 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20243043040220 its reverse (2204034034202), we get a palindrome (22447077074422).

The spelling of 20243043040220 in words is "twenty trillion, two hundred forty-three billion, forty-three million, forty thousand, two hundred twenty".