22004400640440 has 32 divisors (see below), whose sum is σ = 66013201921680. Its totient is φ = 5867840170752.

The previous prime is 22004400640423. The next prime is 22004400640477. The reversal of 22004400640440 is 4404600440022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22004400640398 and 22004400640407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91685002549 + ... + 91685002788.

Almost surely, 2^{22004400640440} is an apocalyptic number.

22004400640440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22004400640440 is an abundant number, since it is smaller than the sum of its proper divisors (44008801281240).

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

22004400640440 is a wasteful number, since it uses less digits than its factorization.

22004400640440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183370005351 (or 183370005347 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

The spelling of 22004400640440 in words is "twenty-two trillion, four billion, four hundred million, six hundred forty thousand, four hundred forty".