166011717060 has 144 divisors (see below), whose sum is σ = 582792537600. Its totient is φ = 37465189632.

The previous prime is 166011717019. The next prime is 166011717061. The reversal of 166011717060 is 60717110661.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (166011717061) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 734355 + ... + 933434.

It is an arithmetic number, because the mean of its divisors is an integer number (4047170400).

Almost surely, 2^166011717060 is an apocalyptic number.

166011717060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166011717060 is an abundant number, since it is smaller than the sum of its proper divisors (416780820540).

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

166011717060 is a wasteful number, since it uses less digits than its factorization.

166011717060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667890 (or 1667885 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The spelling of 166011717060 in words is "one hundred sixty-six billion, eleven million, seven hundred seventeen thousand, sixty".