6665455443 has 4 divisors (see below), whose sum is σ = 8887273928. Its totient is φ = 4443636960.

The previous prime is 6665455441. The next prime is 6665455471. The reversal of 6665455443 is 3445545666.

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

It is not a de Polignac number, because 6665455443 - 2¹ = 6665455441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6665455392 and 6665455401.

It is not an unprimeable number, because it can be changed into a prime (6665455441) 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 3 ways as a sum of consecutive naturals, for example, 1110909238 + ... + 1110909243.

It is an arithmetic number, because the mean of its divisors is an integer number (2221818482).

Almost surely, 2^6665455443 is an apocalyptic number.

6665455443 is a deficient number, since it is larger than the sum of its proper divisors (2221818485).

6665455443 is a wasteful number, since it uses less digits than its factorization.

6665455443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221818484.

The product of its digits is 5184000, while the sum is 48.

The square root of 6665455443 is about 81642.2405559769. The cubic root of 6665455443 is about 1881.9580703476.

The spelling of 6665455443 in words is "six billion, six hundred sixty-five million, four hundred fifty-five thousand, four hundred forty-three".