666044805003 has 16 divisors (see below), whose sum is σ = 935267520000. Its totient is φ = 420449369760.

The previous prime is 666044805001. The next prime is 666044805007. The reversal of 666044805003 is 300508440666.

It is not a de Polignac number, because 666044805003 - 2¹ = 666044805001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666044805001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2808768 + ... + 3036653.

It is an arithmetic number, because the mean of its divisors is an integer number (58454220000).

Almost surely, 2^666044805003 is an apocalyptic number.

666044805003 is a deficient number, since it is larger than the sum of its proper divisors (269222714997).

666044805003 is a wasteful number, since it uses less digits than its factorization.

666044805003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847442.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 666044805003 in words is "six hundred sixty-six billion, forty-four million, eight hundred five thousand, three".