21414444524 has 12 divisors (see below), whose sum is σ = 40882121448. Its totient is φ = 9733838400.

The previous prime is 21414444521. The next prime is 21414444529. The reversal of 21414444524 is 42544441412.

It is not an unprimeable number, because it can be changed into a prime (21414444521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243345917 + ... + 243346004.

It is an arithmetic number, because the mean of its divisors is an integer number (3406843454).

Almost surely, 2^21414444524 is an apocalyptic number.

It is an amenable number.

21414444524 is a deficient number, since it is larger than the sum of its proper divisors (19467676924).

21414444524 is a wasteful number, since it uses less digits than its factorization.

21414444524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486691936 (or 486691934 counting only the distinct ones).

The product of its digits is 81920, while the sum is 35.

Adding to 21414444524 its reverse (42544441412), we get a palindrome (63958885936).

The spelling of 21414444524 in words is "twenty-one billion, four hundred fourteen million, four hundred forty-four thousand, five hundred twenty-four".