6666848643 has 32 divisors (see below), whose sum is σ = 10945446400. Its totient is φ = 3514980096.

The previous prime is 6666848633. The next prime is 6666848651. The reversal of 6666848643 is 3468486666.

It is not a de Polignac number, because 6666848643 - 2¹³ = 6666840451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6666848603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 820143 + ... + 828231.

It is an arithmetic number, because the mean of its divisors is an integer number (342045200).

Almost surely, 2^6666848643 is an apocalyptic number.

6666848643 is a deficient number, since it is larger than the sum of its proper divisors (4278597757).

6666848643 is a wasteful number, since it uses less digits than its factorization.

6666848643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11131.

The product of its digits is 23887872, while the sum is 57.

The square root of 6666848643 is about 81650.7724580729. The cubic root of 6666848643 is about 1882.0891822349.

The spelling of 6666848643 in words is "six billion, six hundred sixty-six million, eight hundred forty-eight thousand, six hundred forty-three".