21722035441744 has 30 divisors (see below), whose sum is σ = 46260305854490. Its totient is φ = 9873652472640.

The previous prime is 21722035441727. The next prime is 21722035441751. The reversal of 21722035441744 is 44714453022712.

It can be written as a sum of positive squares in only one way, i.e., 17253124001344 + 4468911440400 = 4153688^2 + 2113980^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21722035441694 and 21722035441703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5610027879 + ... + 5610031750.

Almost surely, 2^{21722035441744} is an apocalyptic number.

It is an amenable number.

21722035441744 is an abundant number, since it is smaller than the sum of its proper divisors (24538270412746).

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

21722035441744 is a wasteful number, since it uses less digits than its factorization.

21722035441744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11220059659 (or 11220059642 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 46.

The spelling of 21722035441744 in words is "twenty-one trillion, seven hundred twenty-two billion, thirty-five million, four hundred forty-one thousand, seven hundred forty-four".