21434849323 has 8 divisors (see below), whose sum is σ = 22054389840. Its totient is φ = 20819915520.

The previous prime is 21434849269. The next prime is 21434849327. The reversal of 21434849323 is 32394843412.

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 21434849323 - 2¹⁷ = 21434718251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21434849323.

It is not an unprimeable number, because it can be changed into a prime (21434849327) 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, 1142238 + ... + 1160851.

It is an arithmetic number, because the mean of its divisors is an integer number (2756798730).

Almost surely, 2^21434849323 is an apocalyptic number.

21434849323 is a deficient number, since it is larger than the sum of its proper divisors (619540517).

21434849323 is a wasteful number, since it uses less digits than its factorization.

21434849323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303357.

The product of its digits is 497664, while the sum is 43.

The spelling of 21434849323 in words is "twenty-one billion, four hundred thirty-four million, eight hundred forty-nine thousand, three hundred twenty-three".