665011004443 has 8 divisors (see below), whose sum is σ = 704159718768. Its totient is φ = 625865670144.

The previous prime is 665011004417. The next prime is 665011004453. The reversal of 665011004443 is 344400110566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 665011004443 - 2⁹ = 665011003931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665011004399 and 665011004408.

It is not an unprimeable number, because it can be changed into a prime (665011004453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434221 + ... + 1232302.

It is an arithmetic number, because the mean of its divisors is an integer number (88019964846).

Almost surely, 2^665011004443 is an apocalyptic number.

665011004443 is a deficient number, since it is larger than the sum of its proper divisors (39148714325).

665011004443 is a wasteful number, since it uses less digits than its factorization.

665011004443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690013.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 665011004443 in words is "six hundred sixty-five billion, eleven million, four thousand, four hundred forty-three".