166065543376000 has 128 divisors (see below), whose sum is σ = 412918500384000. Its totient is φ = 66420096793600.

The previous prime is 166065543375959. The next prime is 166065543376001. The reversal of 166065543376000 is 673345560661.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×166065543376000² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166065543376001) 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, 175191321 + ... + 176136679.

It is an arithmetic number, because the mean of its divisors is an integer number (3225925784250).

Almost surely, 2^{166065543376000} is an apocalyptic number.

166065543376000 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 166065543376000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206459250192000).

166065543376000 is an abundant number, since it is smaller than the sum of its proper divisors (246852957008000).

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

166065543376000 is an equidigital number, since it uses as much as digits as its factorization.

166065543376000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956367 (or 956345 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 52.

The spelling of 166065543376000 in words is "one hundred sixty-six trillion, sixty-five billion, five hundred forty-three million, three hundred seventy-six thousand".