21441552333541 has 8 divisors (see below), whose sum is σ = 21470930403840. Its totient is φ = 21412185987888.

The previous prime is 21441552333529. The next prime is 21441552333571. The reversal of 21441552333541 is 14533325514412.

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 21441552333541 - 2³⁹ = 20891796519653 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 (21441552333571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731995 + ... + 6589303.

It is an arithmetic number, because the mean of its divisors is an integer number (2683866300480).

Almost surely, 2^{21441552333541} is an apocalyptic number.

It is an amenable number.

21441552333541 is a deficient number, since it is larger than the sum of its proper divisors (29378070299).

21441552333541 is an equidigital number, since it uses as much as digits as its factorization.

21441552333541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5862323.

The product of its digits is 864000, while the sum is 43.

Adding to 21441552333541 its reverse (14533325514412), we get a palindrome (35974877847953).

The spelling of 21441552333541 in words is "twenty-one trillion, four hundred forty-one billion, five hundred fifty-two million, three hundred thirty-three thousand, five hundred forty-one".