43040440411 has 4 divisors (see below), whose sum is σ = 43682835112. Its totient is φ = 42398045712.

The previous prime is 43040440381. The next prime is 43040440447. The reversal of 43040440411 is 11404404034.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43040440411 - 2⁷ = 43040440283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43040440211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321197250 + ... + 321197383.

It is an arithmetic number, because the mean of its divisors is an integer number (10920708778).

Almost surely, 2^43040440411 is an apocalyptic number.

43040440411 is a deficient number, since it is larger than the sum of its proper divisors (642394701).

43040440411 is an equidigital number, since it uses as much as digits as its factorization.

43040440411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642394700.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 43040440411 its reverse (11404404034), we get a palindrome (54444844445).

The spelling of 43040440411 in words is "forty-three billion, forty million, four hundred forty thousand, four hundred eleven".