21726224650724 has 48 divisors (see below), whose sum is σ = 42185824047360. Its totient is φ = 9708152298240.

The previous prime is 21726224650619. The next prime is 21726224650729. The reversal of 21726224650724 is 42705642262712.

It is not an unprimeable number, because it can be changed into a prime (21726224650729) 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, 15357404 + ... + 16712339.

It is an arithmetic number, because the mean of its divisors is an integer number (878871334320).

Almost surely, 2^{21726224650724} is an apocalyptic number.

It is an amenable number.

21726224650724 is a deficient number, since it is larger than the sum of its proper divisors (20459599396636).

21726224650724 is a wasteful number, since it uses less digits than its factorization.

21726224650724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32070020 (or 32070018 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 50.

The spelling of 21726224650724 in words is "twenty-one trillion, seven hundred twenty-six billion, two hundred twenty-four million, six hundred fifty thousand, seven hundred twenty-four".