1666560150066 has 48 divisors (see below), whose sum is σ = 3982095210816. Its totient is φ = 463290849504.

The previous prime is 1666560150007. The next prime is 1666560150083. The reversal of 1666560150066 is 6600510656661.

It is a junction number, because it is equal to n+sod(n) for n = 1666560149997 and 1666560150024.

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 23 ways as a sum of consecutive naturals, for example, 76591446 + ... + 76613201.

It is an arithmetic number, because the mean of its divisors is an integer number (82960316892).

Almost surely, 2^{1666560150066} is an apocalyptic number.

1666560150066 is an abundant number, since it is smaller than the sum of its proper divisors (2315535060750).

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

1666560150066 is a wasteful number, since it uses less digits than its factorization.

1666560150066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153204703 (or 153204696 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 1666560150066 in words is "one trillion, six hundred sixty-six billion, five hundred sixty million, one hundred fifty thousand, sixty-six".