3166666206643 has 4 divisors (see below), whose sum is σ = 3166763702008. Its totient is φ = 3166568711280.

The previous prime is 3166666206547. The next prime is 3166666206653. The reversal of 3166666206643 is 3466026666613.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3166666206643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3166666206653) 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, 48698946 + ... + 48763927.

It is an arithmetic number, because the mean of its divisors is an integer number (791690925502).

Almost surely, 2^{3166666206643} is an apocalyptic number.

3166666206643 is a deficient number, since it is larger than the sum of its proper divisors (97495365).

3166666206643 is an equidigital number, since it uses as much as digits as its factorization.

3166666206643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97495364.

The product of its (nonzero) digits is 20155392, while the sum is 55.

The spelling of 3166666206643 in words is "three trillion, one hundred sixty-six billion, six hundred sixty-six million, two hundred six thousand, six hundred forty-three".