20664222320430 has 192 divisors, whose sum is σ = 59107938140160. Its totient is φ = 4976915851008.

The previous prime is 20664222320393. The next prime is 20664222320471. The reversal of 20664222320430 is 3402322246602.

20664222320430 is a `hidden beast` number, since 2 + 0 + 6 + 6 + 422 + 23 + 204 + 3 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 196976731 + ... + 197081609.

It is an arithmetic number, because the mean of its divisors is an integer number (307853844480).

Almost surely, 2^{20664222320430} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20664222320430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29553969070080).

20664222320430 is an abundant number, since it is smaller than the sum of its proper divisors (38443715819730).

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

20664222320430 is a wasteful number, since it uses less digits than its factorization.

20664222320430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108535 (or 108532 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

The spelling of 20664222320430 in words is "twenty trillion, six hundred sixty-four billion, two hundred twenty-two million, three hundred twenty thousand, four hundred thirty".