4043404414021 has 6 divisors (see below), whose sum is σ = 4703552073510. Its totient is φ = 3465775211976.

The previous prime is 4043404414009. The next prime is 4043404414031. The reversal of 4043404414021 is 1204144043404.

It can be written as a sum of positive squares in only one way, i.e., 3809371001121 + 234033412900 = 1951761^2 + 483770^2 .

It is not a de Polignac number, because 4043404414021 - 2⁹ = 4043404413509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4043404414001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41259228666 + ... + 41259228763.

It is an arithmetic number, because the mean of its divisors is an integer number (783925345585).

Almost surely, 2^{4043404414021} is an apocalyptic number.

It is an amenable number.

4043404414021 is a deficient number, since it is larger than the sum of its proper divisors (660147659489).

4043404414021 is an equidigital number, since it uses as much as digits as its factorization.

4043404414021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82518457443 (or 82518457436 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 4043404414021 its reverse (1204144043404), we get a palindrome (5247548457425).

The spelling of 4043404414021 in words is "four trillion, forty-three billion, four hundred four million, four hundred fourteen thousand, twenty-one".