22646779680 has 384 divisors, whose sum is σ = 86227255296. Its totient is φ = 4886323200.

The previous prime is 22646779669. The next prime is 22646779703. The reversal of 22646779680 is 8697764622.

It is a self number, because there is not a number n which added to its sum of digits gives 22646779680.

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 63 ways as a sum of consecutive naturals, for example, 4267909 + ... + 4273211.

It is an arithmetic number, because the mean of its divisors is an integer number (224550144).

Almost surely, 2^22646779680 is an apocalyptic number.

22646779680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22646779680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43113627648).

22646779680 is an abundant number, since it is smaller than the sum of its proper divisors (63580475616).

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

22646779680 is a wasteful number, since it uses less digits than its factorization.

22646779680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5400 (or 5392 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 22646779680 in words is "twenty-two billion, six hundred forty-six million, seven hundred seventy-nine thousand, six hundred eighty".