22006664664 has 64 divisors (see below), whose sum is σ = 56431404000. Its totient is φ = 7148783616.

The previous prime is 22006664639. The next prime is 22006664749. The reversal of 22006664664 is 46646660022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131472 + ... + 247584.

Almost surely, 2^22006664664 is an apocalyptic number.

22006664664 is a gapful number since it is divisible by the number (24) 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 22006664664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28215702000).

22006664664 is an abundant number, since it is smaller than the sum of its proper divisors (34424739336).

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

22006664664 is a wasteful number, since it uses less digits than its factorization.

22006664664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116324 (or 116320 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 22006664664 in words is "twenty-two billion, six million, six hundred sixty-four thousand, six hundred sixty-four".