166611156005 has 16 divisors (see below), whose sum is σ = 228559889280. Its totient is φ = 114215355072.

The previous prime is 166611155993. The next prime is 166611156037. The reversal of 166611156005 is 500651116661.

166611156005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166611156005 - 2⁶ = 166611155941 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166611156005.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 546890 + ... + 795179.

It is an arithmetic number, because the mean of its divisors is an integer number (14284993080).

Almost surely, 2^166611156005 is an apocalyptic number.

It is an amenable number.

166611156005 is a deficient number, since it is larger than the sum of its proper divisors (61948733275).

166611156005 is a wasteful number, since it uses less digits than its factorization.

166611156005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345628.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 166611156005 in words is "one hundred sixty-six billion, six hundred eleven million, one hundred fifty-six thousand, five".