166605006001 has 4 divisors (see below), whose sum is σ = 190405721152. Its totient is φ = 142804290852.

The previous prime is 166605005969. The next prime is 166605006019. The reversal of 166605006001 is 100600506661.

166605006001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166605006001 - 2⁵ = 166605005969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166605006901) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11900357565 + ... + 11900357578.

It is an arithmetic number, because the mean of its divisors is an integer number (47601430288).

Almost surely, 2^166605006001 is an apocalyptic number.

It is an amenable number.

166605006001 is a deficient number, since it is larger than the sum of its proper divisors (23800715151).

166605006001 is an equidigital number, since it uses as much as digits as its factorization.

166605006001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23800715150.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 166605006001 in words is "one hundred sixty-six billion, six hundred five million, six thousand, one".