166666666670 has 32 divisors (see below), whose sum is σ = 343079566848. Its totient is φ = 57105786528.

The previous prime is 166666666669. The next prime is 166666666709. The reversal of 166666666670 is 76666666661.

166666666670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 663524 + ... + 879543.

It is an arithmetic number, because the mean of its divisors is an integer number (10721236464).

Almost surely, 2^166666666670 is an apocalyptic number.

166666666670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166666666670 is an abundant number, since it is smaller than the sum of its proper divisors (176412900178).

166666666670 is a wasteful number, since it uses less digits than its factorization.

166666666670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544624.

The product of its (nonzero) digits is 70543872, while the sum is 62.

Subtracting from 166666666670 its reverse (76666666661), we obtain a palindrome (90000000009).

The spelling of 166666666670 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy".