22066570001660 has 96 divisors (see below), whose sum is σ = 49018624200000. Its totient is φ = 8320989358080.

The previous prime is 22066570001647. The next prime is 22066570001731. The reversal of 22066570001660 is 6610007566022.

It is a super-4 number, since 4×22066570001660⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143446466 + ... + 143600214.

It is an arithmetic number, because the mean of its divisors is an integer number (510610668750).

Almost surely, 2^{22066570001660} is an apocalyptic number.

22066570001660 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 22066570001660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24509312100000).

22066570001660 is an abundant number, since it is smaller than the sum of its proper divisors (26952054198340).

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

22066570001660 is a wasteful number, since it uses less digits than its factorization.

22066570001660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155631 (or 155629 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

Adding to 22066570001660 its reverse (6610007566022), we get a palindrome (28676577567682).

The spelling of 22066570001660 in words is "twenty-two trillion, sixty-six billion, five hundred seventy million, one thousand, six hundred sixty".