21414423443 has 8 divisors (see below), whose sum is σ = 25263098880. Its totient is φ = 17763116040.

The previous prime is 21414423403. The next prime is 21414423449. The reversal of 21414423443 is 34432441412.

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 21414423443 - 2⁶ = 21414423379 is a prime.

It is a super-2 number, since 2×21414423443² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21414423449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49341773 + ... + 49342206.

It is an arithmetic number, because the mean of its divisors is an integer number (3157887360).

Almost surely, 2^21414423443 is an apocalyptic number.

21414423443 is a deficient number, since it is larger than the sum of its proper divisors (3848675437).

21414423443 is an equidigital number, since it uses as much as digits as its factorization.

21414423443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98684017.

The product of its digits is 36864, while the sum is 32.

Adding to 21414423443 its reverse (34432441412), we get a palindrome (55846864855).

The spelling of 21414423443 in words is "twenty-one billion, four hundred fourteen million, four hundred twenty-three thousand, four hundred forty-three".