22421847656 has 32 divisors (see below), whose sum is σ = 45286658760. Its totient is φ = 10345853952.

The previous prime is 22421847649. The next prime is 22421847661. The reversal of 22421847656 is 65674812422.

It can be written as a sum of positive squares in 4 ways, for example, as 7510995556 + 14910852100 = 86666^2 + 122110^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22421847656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405956 + ... + 457868.

Almost surely, 2^22421847656 is an apocalyptic number.

22421847656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22421847656 is an abundant number, since it is smaller than the sum of its proper divisors (22864811104).

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

22421847656 is a wasteful number, since it uses less digits than its factorization.

22421847656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56085 (or 56081 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 47.

The spelling of 22421847656 in words is "twenty-two billion, four hundred twenty-one million, eight hundred forty-seven thousand, six hundred fifty-six".