166656227584 has 144 divisors (see below), whose sum is σ = 415602432000. Its totient is φ = 64797050880.

The previous prime is 166656227567. The next prime is 166656227593. The reversal of 166656227584 is 485722656661.

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 15 ways as a sum of consecutive naturals, for example, 9827817 + ... + 9844759.

It is an arithmetic number, because the mean of its divisors is an integer number (2886128000).

Almost surely, 2^166656227584 is an apocalyptic number.

166656227584 is a gapful number since it is divisible by the number (14) 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 166656227584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207801216000).

166656227584 is an abundant number, since it is smaller than the sum of its proper divisors (248946204416).

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

166656227584 is a wasteful number, since it uses less digits than its factorization.

166656227584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17476 (or 17462 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 58.

The spelling of 166656227584 in words is "one hundred sixty-six billion, six hundred fifty-six million, two hundred twenty-seven thousand, five hundred eighty-four".