21063414243 has 8 divisors (see below), whose sum is σ = 28252723968. Its totient is φ = 13958190344.

The previous prime is 21063414227. The next prime is 21063414257. The reversal of 21063414243 is 34241436012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21063414243 - 2⁴ = 21063414227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21063414243.

It is not an unprimeable number, because it can be changed into a prime (21063414143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21020871 + ... + 21021872.

It is an arithmetic number, because the mean of its divisors is an integer number (3531590496).

Almost surely, 2^21063414243 is an apocalyptic number.

21063414243 is a deficient number, since it is larger than the sum of its proper divisors (7189309725).

21063414243 is a wasteful number, since it uses less digits than its factorization.

21063414243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42042913.

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 21063414243 in words is "twenty-one billion, sixty-three million, four hundred fourteen thousand, two hundred forty-three".