43240440320 has 160 divisors (see below), whose sum is σ = 129258619776. Its totient is φ = 13477478400.

The previous prime is 43240440233. The next prime is 43240440323. The reversal of 43240440320 is 2304404234.

It is a tau number, because it is divible by the number of its divisors (160).

It is a self number, because there is not a number n which added to its sum of digits gives 43240440320.

It is not an unprimeable number, because it can be changed into a prime (43240440323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87440 + ... + 306800.

Almost surely, 2^43240440320 is an apocalyptic number.

43240440320 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 43240440320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64629309888).

43240440320 is an abundant number, since it is smaller than the sum of its proper divisors (86018179456).

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

43240440320 is a wasteful number, since it uses less digits than its factorization.

43240440320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219402 (or 219386 counting only the distinct ones).

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

Adding to 43240440320 its reverse (2304404234), we get a palindrome (45544844554).

The spelling of 43240440320 in words is "forty-three billion, two hundred forty million, four hundred forty thousand, three hundred twenty".