21441426546243 has 48 divisors (see below), whose sum is σ = 31945098721536. Its totient is φ = 12780933000000.

The previous prime is 21441426546191. The next prime is 21441426546307. The reversal of 21441426546243 is 34264562414412.

It is not a de Polignac number, because 21441426546243 - 2¹⁸ = 21441426284099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21441426546192 and 21441426546201.

It is not an unprimeable number, because it can be changed into a prime (21441426542243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3599608 + ... + 7472618.

It is an arithmetic number, because the mean of its divisors is an integer number (665522890032).

Almost surely, 2^{21441426546243} is an apocalyptic number.

21441426546243 is a deficient number, since it is larger than the sum of its proper divisors (10503672175293).

21441426546243 is a wasteful number, since it uses less digits than its factorization.

21441426546243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873288 (or 3873277 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 48.

The spelling of 21441426546243 in words is "twenty-one trillion, four hundred forty-one billion, four hundred twenty-six million, five hundred forty-six thousand, two hundred forty-three".