21441550414541 has 16 divisors (see below), whose sum is σ = 21732486277104. Its totient is φ = 21152590577664.

The previous prime is 21441550414481. The next prime is 21441550414547. The reversal of 21441550414541 is 14541405514412.

It can be written as a sum of positive squares in 8 ways, for example, as 895727852041 + 20545822562500 = 946429^2 + 4532750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21441550414541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441550414547) 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, 23497085 + ... + 24392541.

It is an arithmetic number, because the mean of its divisors is an integer number (1358280392319).

Almost surely, 2^{21441550414541} is an apocalyptic number.

It is an amenable number.

21441550414541 is a deficient number, since it is larger than the sum of its proper divisors (290935862563).

21441550414541 is a wasteful number, since it uses less digits than its factorization.

21441550414541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896560.

The product of its (nonzero) digits is 256000, while the sum is 41.

Adding to 21441550414541 its reverse (14541405514412), we get a palindrome (35982955928953).

The spelling of 21441550414541 in words is "twenty-one trillion, four hundred forty-one billion, five hundred fifty million, four hundred fourteen thousand, five hundred forty-one".