21341444424 has 64 divisors (see below), whose sum is σ = 55691245440. Its totient is φ = 6802329600.

The previous prime is 21341444413. The next prime is 21341444429. The reversal of 21341444424 is 42444414312.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21341444429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3364584 + ... + 3370920.

It is an arithmetic number, because the mean of its divisors is an integer number (870175710).

Almost surely, 2^21341444424 is an apocalyptic number.

21341444424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21341444424 is an abundant number, since it is smaller than the sum of its proper divisors (34349801016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21341444424 is a wasteful number, since it uses less digits than its factorization.

21341444424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12470 (or 12466 counting only the distinct ones).

The product of its digits is 49152, while the sum is 33.

Adding to 21341444424 its reverse (42444414312), we get a palindrome (63785858736).

The spelling of 21341444424 in words is "twenty-one billion, three hundred forty-one million, four hundred forty-four thousand, four hundred twenty-four".