40143303440 has 40 divisors (see below), whose sum is σ = 94647745728. Its totient is φ = 15831159680.

The previous prime is 40143303427. The next prime is 40143303443. The reversal of 40143303440 is 4430334104.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×40143303440² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40143303443) 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, 3528062 + ... + 3539421.

Almost surely, 2^40143303440 is an apocalyptic number.

40143303440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40143303440 is an abundant number, since it is smaller than the sum of its proper divisors (54504442288).

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

40143303440 is a wasteful number, since it uses less digits than its factorization.

40143303440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067567 (or 7067561 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 40143303440 its reverse (4430334104), we get a palindrome (44573637544).

The spelling of 40143303440 in words is "forty billion, one hundred forty-three million, three hundred three thousand, four hundred forty".