166656055000 has 80 divisors (see below), whose sum is σ = 390910806000. Its totient is φ = 66588048000.

The previous prime is 166656054977. The next prime is 166656055063. The reversal of 166656055000 is 550656661.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4576866 + ... + 4613134.

It is an arithmetic number, because the mean of its divisors is an integer number (4886385075).

Almost surely, 2^166656055000 is an apocalyptic number.

166656055000 is a gapful number since it is divisible by the number (10) 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 166656055000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195455403000).

166656055000 is an abundant number, since it is smaller than the sum of its proper divisors (224254751000).

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

166656055000 is an equidigital number, since it uses as much as digits as its factorization.

166656055000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37214 (or 37195 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 166656055000 in words is "one hundred sixty-six billion, six hundred fifty-six million, fifty-five thousand".