20822718532266 has 144 divisors (see below), whose sum is σ = 52621092538560. Its totient is φ = 5933560026240.

The previous prime is 20822718532261. The next prime is 20822718532331. The reversal of 20822718532266 is 66223581722802.

20822718532266 is a `hidden beast` number, since 2 + 0 + 8 + 2 + 271 + 85 + 32 + 266 = 666.

It is not an unprimeable number, because it can be changed into a prime (20822718532261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2509664230 + ... + 2509672526.

It is an arithmetic number, because the mean of its divisors is an integer number (365424253740).

Almost surely, 2^{20822718532266} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20822718532266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26310546269280).

20822718532266 is an abundant number, since it is smaller than the sum of its proper divisors (31798374006294).

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

20822718532266 is a wasteful number, since it uses less digits than its factorization.

20822718532266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15529 (or 15519 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 20822718532266 in words is "twenty trillion, eight hundred twenty-two billion, seven hundred eighteen million, five hundred thirty-two thousand, two hundred sixty-six".