6666377043 has 4 divisors (see below), whose sum is σ = 8888502728. Its totient is φ = 4444251360.

The previous prime is 6666377041. The next prime is 6666377071. The reversal of 6666377043 is 3407736666.

6666377043 is digitally balanced in base 3, 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 not a de Polignac number, because 6666377043 - 2¹ = 6666377041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6666376983 and 6666377001.

It is not an unprimeable number, because it can be changed into a prime (6666377041) 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, 1111062838 + ... + 1111062843.

It is an arithmetic number, because the mean of its divisors is an integer number (2222125682).

Almost surely, 2^6666377043 is an apocalyptic number.

6666377043 is a deficient number, since it is larger than the sum of its proper divisors (2222125685).

6666377043 is a wasteful number, since it uses less digits than its factorization.

6666377043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222125684.

The product of its (nonzero) digits is 2286144, while the sum is 48.

The square root of 6666377043 is about 81647.8844980077. The cubic root of 6666377043 is about 1882.0448027369.

The spelling of 6666377043 in words is "six billion, six hundred sixty-six million, three hundred seventy-seven thousand, forty-three".