243012241040440 has 16 divisors (see below), whose sum is σ = 546777542341080. Its totient is φ = 97204896416160.

The previous prime is 243012241040407. The next prime is 243012241040441. The reversal of 243012241040440 is 44040142210342.

It is a happy number.

It is a super-4 number, since 4×243012241040440⁴ (a number of 59 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243012241040441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3037653012966 + ... + 3037653013045.

Almost surely, 2^{243012241040440} is an apocalyptic number.

243012241040440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243012241040440 is an abundant number, since it is smaller than the sum of its proper divisors (303765301300640).

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

243012241040440 is a wasteful number, since it uses less digits than its factorization.

243012241040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6075306026022 (or 6075306026018 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 243012241040440 its reverse (44040142210342), we get a palindrome (287052383250782).

The spelling of 243012241040440 in words is "two hundred forty-three trillion, twelve billion, two hundred forty-one million, forty thousand, four hundred forty".