40043323424 has 96 divisors (see below), whose sum is σ = 88248968640. Its totient is φ = 17758540800.

The previous prime is 40043323373. The next prime is 40043323427. The reversal of 40043323424 is 42432334004.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (40043323427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2537639 + ... + 2553369.

It is an arithmetic number, because the mean of its divisors is an integer number (919260090).

Almost surely, 2^40043323424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40043323424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44124484320).

40043323424 is an abundant number, since it is smaller than the sum of its proper divisors (48205645216).

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

40043323424 is a wasteful number, since it uses less digits than its factorization.

40043323424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15994 (or 15986 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 40043323424 its reverse (42432334004), we get a palindrome (82475657428).

The spelling of 40043323424 in words is "forty billion, forty-three million, three hundred twenty-three thousand, four hundred twenty-four".