166799640001 has 8 divisors (see below), whose sum is σ = 166897242144. Its totient is φ = 166702073760.

The previous prime is 166799639987. The next prime is 166799640013. The reversal of 166799640001 is 100046997661.

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 166799640001 - 2⁵ = 166799639969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166799640041) 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, 17393730 + ... + 17403316.

It is an arithmetic number, because the mean of its divisors is an integer number (20862155268).

Almost surely, 2^166799640001 is an apocalyptic number.

It is an amenable number.

166799640001 is a deficient number, since it is larger than the sum of its proper divisors (97602143).

166799640001 is an equidigital number, since it uses as much as digits as its factorization.

166799640001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17951.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 166799640001 in words is "one hundred sixty-six billion, seven hundred ninety-nine million, six hundred forty thousand, one".