166670566206803 has 4 divisors (see below), whose sum is σ = 166673461308168. Its totient is φ = 166667671105440.

The previous prime is 166670566206769. The next prime is 166670566206827. The reversal of 166670566206803 is 308602665076661.

It is a happy number.

166670566206803 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.

It is a cyclic number.

It is not a de Polignac number, because 166670566206803 - 2²⁶ = 166670499097939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166670566209803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447464326 + ... + 1447579467.

It is an arithmetic number, because the mean of its divisors is an integer number (41668365327042).

Almost surely, 2^{166670566206803} is an apocalyptic number.

166670566206803 is a deficient number, since it is larger than the sum of its proper divisors (2895101365).

166670566206803 is an equidigital number, since it uses as much as digits as its factorization.

166670566206803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895101364.

The product of its (nonzero) digits is 78382080, while the sum is 62.

The spelling of 166670566206803 in words is "one hundred sixty-six trillion, six hundred seventy billion, five hundred sixty-six million, two hundred six thousand, eight hundred three".