21024325243 has 8 divisors (see below), whose sum is σ = 21503121408. Its totient is φ = 20546840424.

The previous prime is 21024325123. The next prime is 21024325297. The reversal of 21024325243 is 34252342012.

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 21024325243 - 2²⁹ = 20487454331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21024325843) 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, 295371 + ... + 359572.

It is an arithmetic number, because the mean of its divisors is an integer number (2687890176).

Almost surely, 2^21024325243 is an apocalyptic number.

21024325243 is a deficient number, since it is larger than the sum of its proper divisors (478796165).

21024325243 is an equidigital number, since it uses as much as digits as its factorization.

21024325243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655673.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 21024325243 its reverse (34252342012), we get a palindrome (55276667255).

The spelling of 21024325243 in words is "twenty-one billion, twenty-four million, three hundred twenty-five thousand, two hundred forty-three".