21722441704 has 32 divisors (see below), whose sum is σ = 41193167400. Its totient is φ = 10738033920.

The previous prime is 21722441683. The next prime is 21722441707. The reversal of 21722441704 is 40714422712.

It can be written as a sum of positive squares in 4 ways, for example, as 21494492100 + 227949604 = 146610^2 + 15098^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21722441704.

It is not an unprimeable number, because it can be changed into a prime (21722441707) 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, 374974 + ... + 429010.

Almost surely, 2^21722441704 is an apocalyptic number.

It is an amenable number.

21722441704 is a deficient number, since it is larger than the sum of its proper divisors (19470725696).

21722441704 is a wasteful number, since it uses less digits than its factorization.

21722441704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54613 (or 54609 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The spelling of 21722441704 in words is "twenty-one billion, seven hundred twenty-two million, four hundred forty-one thousand, seven hundred four".