21441550141253 has 16 divisors (see below), whose sum is σ = 24182057823360. Its totient is φ = 18839899512000.

The previous prime is 21441550141189. The next prime is 21441550141267. The reversal of 21441550141253 is 35214105514412.

It is a cyclic number.

It is not a de Polignac number, because 21441550141253 - 2⁶ = 21441550141189 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 (21441550141283) 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, 174382058 + ... + 174504971.

It is an arithmetic number, because the mean of its divisors is an integer number (1511378613960).

Almost surely, 2^{21441550141253} is an apocalyptic number.

It is an amenable number.

21441550141253 is a deficient number, since it is larger than the sum of its proper divisors (2740507682107).

21441550141253 is a wasteful number, since it uses less digits than its factorization.

21441550141253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348887228.

The product of its (nonzero) digits is 96000, while the sum is 38.

Adding to 21441550141253 its reverse (35214105514412), we get a palindrome (56655655655665).

The spelling of 21441550141253 in words is "twenty-one trillion, four hundred forty-one billion, five hundred fifty million, one hundred forty-one thousand, two hundred fifty-three".