6666043795 has 4 divisors (see below), whose sum is σ = 7999252560. Its totient is φ = 5332835032.

The previous prime is 6666043789. The next prime is 6666043843. The reversal of 6666043795 is 5973406666.

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 6666043795 - 2⁹ = 6666043283 is a prime.

It is a super-2 number, since 2×6666043795² = 88872279753716004050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666604375 + ... + 666604384.

It is an arithmetic number, because the mean of its divisors is an integer number (1999813140).

Almost surely, 2^6666043795 is an apocalyptic number.

6666043795 is a deficient number, since it is larger than the sum of its proper divisors (1333208765).

6666043795 is a wasteful number, since it uses less digits than its factorization.

6666043795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333208764.

The product of its (nonzero) digits is 4898880, while the sum is 52.

The square root of 6666043795 is about 81645.8437092789. The cubic root of 6666043795 is about 1882.0134414685.

The spelling of 6666043795 in words is "six billion, six hundred sixty-six million, forty-three thousand, seven hundred ninety-five".