166505566150 has 192 divisors, whose sum is σ = 409665208320. Its totient is φ = 48776515200.

The previous prime is 166505566057. The next prime is 166505566177. The reversal of 166505566150 is 51665505661.

It is a self number, because there is not a number n which added to its sum of digits gives 166505566150.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 9281089 + ... + 9299011.

It is an arithmetic number, because the mean of its divisors is an integer number (2133672960).

Almost surely, 2^166505566150 is an apocalyptic number.

166505566150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166505566150 is an abundant number, since it is smaller than the sum of its proper divisors (243159642170).

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

166505566150 is a wasteful number, since it uses less digits than its factorization.

166505566150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18099 (or 18094 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

It can be divided in two parts, 166505 and 566150, that added together give a triangular number (732655 = T₁₂₁₀).

The spelling of 166505566150 in words is "one hundred sixty-six billion, five hundred five million, five hundred sixty-six thousand, one hundred fifty".