21441073827823 has 32 divisors (see below), whose sum is σ = 23950575936000. Its totient is φ = 19060850880000.

The previous prime is 21441073827799. The next prime is 21441073827839. The reversal of 21441073827823 is 32872837014412.

It is a cyclic number.

It is not a de Polignac number, because 21441073827823 - 2⁴¹ = 19242050572271 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 (21441073827863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71439573 + ... + 71739073.

It is an arithmetic number, because the mean of its divisors is an integer number (748455498000).

Almost surely, 2^{21441073827823} is an apocalyptic number.

21441073827823 is a deficient number, since it is larger than the sum of its proper divisors (2509502108177).

21441073827823 is a wasteful number, since it uses less digits than its factorization.

21441073827823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300403.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 21441073827823 in words is "twenty-one trillion, four hundred forty-one billion, seventy-three million, eight hundred twenty-seven thousand, eight hundred twenty-three".