21450044112423 has 16 divisors (see below), whose sum is σ = 28707543590400. Its totient is φ = 14246364297440.

The previous prime is 21450044112401. The next prime is 21450044112449. The reversal of 21450044112423 is 32421144005412.

It is a cyclic number.

It is not a de Polignac number, because 21450044112423 - 2⁹ = 21450044111911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21450044112323) 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, 8548428 + ... + 10769201.

It is an arithmetic number, because the mean of its divisors is an integer number (1794221474400).

Almost surely, 2^{21450044112423} is an apocalyptic number.

21450044112423 is a deficient number, since it is larger than the sum of its proper divisors (7257499477977).

21450044112423 is a wasteful number, since it uses less digits than its factorization.

21450044112423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19319022.

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 21450044112423 its reverse (32421144005412), we get a palindrome (53871188117835).

The spelling of 21450044112423 in words is "twenty-one trillion, four hundred fifty billion, forty-four million, one hundred twelve thousand, four hundred twenty-three".