22444620444 has 18 divisors (see below), whose sum is σ = 56735012880. Its totient is φ = 7481540136.

The previous prime is 22444620421. The next prime is 22444620461. The reversal of 22444620444 is 44402644422.

22444620444 is a `hidden beast` number, since 2 + 2 + 4 + 446 + 204 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 623461679 = 22444620444 / (2 + 2 + 4 + 4 + 4 + 6 + 2 + 0 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 22444620399 and 22444620408.

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, 311730804 + ... + 311730875.

It is an arithmetic number, because the mean of its divisors is an integer number (3151945160).

Almost surely, 2^22444620444 is an apocalyptic number.

It is an amenable number.

22444620444 is an abundant number, since it is smaller than the sum of its proper divisors (34290392436).

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

22444620444 is a wasteful number, since it uses less digits than its factorization.

22444620444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623461689 (or 623461684 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

The spelling of 22444620444 in words is "twenty-two billion, four hundred forty-four million, six hundred twenty thousand, four hundred forty-four".