4221644520533 has 8 divisors (see below), whose sum is σ = 4612000195296. Its totient is φ = 3832383814000.

The previous prime is 4221644520437. The next prime is 4221644520553. The reversal of 4221644520533 is 3350254461224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4221644520533 - 2¹⁸ = 4221644258389 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 (4221644520553) 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, 273733991 + ... + 273749412.

It is an arithmetic number, because the mean of its divisors is an integer number (576500024412).

Almost surely, 2^{4221644520533} is an apocalyptic number.

It is an amenable number.

4221644520533 is a deficient number, since it is larger than the sum of its proper divisors (390355674763).

4221644520533 is a wasteful number, since it uses less digits than its factorization.

4221644520533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547484115.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 4221644520533 its reverse (3350254461224), we get a palindrome (7571898981757).

The spelling of 4221644520533 in words is "four trillion, two hundred twenty-one billion, six hundred forty-four million, five hundred twenty thousand, five hundred thirty-three".