4043536221 has 16 divisors (see below), whose sum is σ = 5409560000. Its totient is φ = 2686618368.

The previous prime is 4043536213. The next prime is 4043536339. The reversal of 4043536221 is 1226353404.

It is not a de Polignac number, because 4043536221 - 2³ = 4043536213 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 (4043536201) 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, 1509135 + ... + 1511811.

It is an arithmetic number, because the mean of its divisors is an integer number (338097500).

Almost surely, 2^4043536221 is an apocalyptic number.

It is an amenable number.

4043536221 is a deficient number, since it is larger than the sum of its proper divisors (1366023779).

4043536221 is a wasteful number, since it uses less digits than its factorization.

4043536221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4188.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 4043536221 is about 63588.8057837227. The cubic root of 4043536221 is about 1593.1394034564.

Adding to 4043536221 its reverse (1226353404), we get a palindrome (5269889625).

The spelling of 4043536221 in words is "four billion, forty-three million, five hundred thirty-six thousand, two hundred twenty-one".