166664930729 has 8 divisors (see below), whose sum is σ = 183616450560. Its totient is φ = 150013438000.

The previous prime is 166664930723. The next prime is 166664930741. The reversal of 166664930729 is 927039466661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166664930729 - 2¹² = 166664926633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166664930723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75005609 + ... + 75007830.

It is an arithmetic number, because the mean of its divisors is an integer number (22952056320).

Almost surely, 2^166664930729 is an apocalyptic number.

It is an amenable number.

166664930729 is a deficient number, since it is larger than the sum of its proper divisors (16951519831).

166664930729 is a wasteful number, since it uses less digits than its factorization.

166664930729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150013551.

The product of its (nonzero) digits is 17635968, while the sum is 59.

The spelling of 166664930729 in words is "one hundred sixty-six billion, six hundred sixty-four million, nine hundred thirty thousand, seven hundred twenty-nine".