22007206656 has 432 divisors, whose sum is σ = 72288921600. Its totient is φ = 6590251008.

The previous prime is 22007206609. The next prime is 22007206667. The reversal of 22007206656 is 65660270022.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22007206656.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 45943825 + ... + 45944303.

Almost surely, 2^22007206656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22007206656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36144460800).

22007206656 is an abundant number, since it is smaller than the sum of its proper divisors (50281714944).

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

22007206656 is a wasteful number, since it uses less digits than its factorization.

22007206656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 22007206656 its reverse (65660270022), we get a palindrome (87667476678).

The spelling of 22007206656 in words is "twenty-two billion, seven million, two hundred six thousand, six hundred fifty-six".