6666955371 has 40 divisors (see below), whose sum is σ = 10242173744. Its totient is φ = 4318712640.

The previous prime is 6666955367. The next prime is 6666955441. The reversal of 6666955371 is 1735596666.

It is not a de Polignac number, because 6666955371 - 2² = 6666955367 is a prime.

It is a Duffinian number.

Its product of digits (6123600) is a multiple of the sum of its prime divisors (3024).

It is not an unprimeable number, because it can be changed into a prime (6666955571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4353876 + ... + 4355406.

Almost surely, 2^6666955371 is an apocalyptic number.

6666955371 is a deficient number, since it is larger than the sum of its proper divisors (3575218373).

6666955371 is a wasteful number, since it uses less digits than its factorization.

6666955371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033 (or 3024 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 54.

The square root of 6666955371 is about 81651.4260193905. The cubic root of 6666955371 is about 1882.0992254878.

The spelling of 6666955371 in words is "six billion, six hundred sixty-six million, nine hundred fifty-five thousand, three hundred seventy-one".