43424365440 has 128 divisors (see below), whose sum is σ = 138968161920. Its totient is φ = 11533568000.

The previous prime is 43424365421. The next prime is 43424365469. The reversal of 43424365440 is 4456342434.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436867 + ... + 526973.

It is an arithmetic number, because the mean of its divisors is an integer number (1085688765).

Almost surely, 2^43424365440 is an apocalyptic number.

43424365440 is a gapful number since it is divisible by the number (40) 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 43424365440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69484080960).

43424365440 is an abundant number, since it is smaller than the sum of its proper divisors (95543796480).

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

43424365440 is a wasteful number, since it uses less digits than its factorization.

43424365440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90380 (or 90368 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 39.

The spelling of 43424365440 in words is "forty-three billion, four hundred twenty-four million, three hundred sixty-five thousand, four hundred forty".