22180720875666 has 32 divisors (see below), whose sum is σ = 44636600379840. Its totient is φ = 7347719957184.

The previous prime is 22180720875637. The next prime is 22180720875667. The reversal of 22180720875666 is 66657802708122.

It is not an unprimeable number, because it can be changed into a prime (22180720875667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13927380 + ... + 15438048.

It is an arithmetic number, because the mean of its divisors is an integer number (1394893761870).

Almost surely, 2^{22180720875666} is an apocalyptic number.

22180720875666 is an abundant number, since it is smaller than the sum of its proper divisors (22455879504174).

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

22180720875666 is a wasteful number, since it uses less digits than its factorization.

22180720875666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525850.

The product of its (nonzero) digits is 27095040, while the sum is 60.

The spelling of 22180720875666 in words is "twenty-two trillion, one hundred eighty billion, seven hundred twenty million, eight hundred seventy-five thousand, six hundred sixty-six".