43344121440 has 48 divisors (see below), whose sum is σ = 136533984048. Its totient is φ = 11558432256.

The previous prime is 43344121421. The next prime is 43344121441. The reversal of 43344121440 is 4412144334.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 43344121398 and 43344121407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43344121441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45149647 + ... + 45150606.

It is an arithmetic number, because the mean of its divisors is an integer number (2844458001).

Almost surely, 2^43344121440 is an apocalyptic number.

43344121440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43344121440 is an abundant number, since it is smaller than the sum of its proper divisors (93189862608).

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

43344121440 is a wasteful number, since it uses less digits than its factorization.

43344121440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90300271 (or 90300263 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 43344121440 its reverse (4412144334), we get a palindrome (47756265774).

The spelling of 43344121440 in words is "forty-three billion, three hundred forty-four million, one hundred twenty-one thousand, four hundred forty".