243120036326020 has 192 divisors, whose sum is σ = 616240558080000. Its totient is φ = 78706066728960.

The previous prime is 243120036326003. The next prime is 243120036326029. The reversal of 243120036326020 is 20623630021342.

It is not an unprimeable number, because it can be changed into a prime (243120036326029) 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, 1141307481 + ... + 1141520479.

It is an arithmetic number, because the mean of its divisors is an integer number (3209586240000).

Almost surely, 2^{243120036326020} is an apocalyptic number.

243120036326020 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 243120036326020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308120279040000).

243120036326020 is an abundant number, since it is smaller than the sum of its proper divisors (373120521753980).

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

243120036326020 is a wasteful number, since it uses less digits than its factorization.

243120036326020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214458 (or 214456 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 243120036326020 its reverse (20623630021342), we get a palindrome (263743666347362).

The spelling of 243120036326020 in words is "two hundred forty-three trillion, one hundred twenty billion, thirty-six million, three hundred twenty-six thousand, twenty".