166663871760 has 160 divisors (see below), whose sum is σ = 521907452928. Its totient is φ = 43993169920.

The previous prime is 166663871753. The next prime is 166663871789. The reversal of 166663871760 is 67178366661.

166663871760 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 166663871760.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23401000 + ... + 23408120.

Almost surely, 2^166663871760 is an apocalyptic number.

166663871760 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 166663871760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260953726464).

166663871760 is an abundant number, since it is smaller than the sum of its proper divisors (355243581168).

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

166663871760 is a wasteful number, since it uses less digits than its factorization.

166663871760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8113 (or 8107 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 166663871760 in words is "one hundred sixty-six billion, six hundred sixty-three million, eight hundred seventy-one thousand, seven hundred sixty".