243322242020 has 432 divisors, whose sum is σ = 653578087680. Its totient is φ = 75725844480.

The previous prime is 243322241959. The next prime is 243322242043. The reversal of 243322242020 is 20242223342.

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 549259919 + ... + 549260361.

It is an arithmetic number, because the mean of its divisors is an integer number (1512912240).

Almost surely, 2^243322242020 is an apocalyptic number.

243322242020 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 243322242020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326789043840).

243322242020 is an abundant number, since it is smaller than the sum of its proper divisors (410255845660).

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

243322242020 is a wasteful number, since it uses less digits than its factorization.

243322242020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 570 counting only the distinct ones).

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

Adding to 243322242020 its reverse (20242223342), we get a palindrome (263564465362).

The spelling of 243322242020 in words is "two hundred forty-three billion, three hundred twenty-two million, two hundred forty-two thousand, twenty".