665516660003 has 8 divisors (see below), whose sum is σ = 718278549408. Its totient is φ = 612978813504.

The previous prime is 665516659987. The next prime is 665516660077. The reversal of 665516660003 is 300066615566.

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 665516660003 - 2⁴ = 665516659987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665516860003) 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, 56004551 + ... + 56016432.

It is an arithmetic number, because the mean of its divisors is an integer number (89784818676).

Almost surely, 2^665516660003 is an apocalyptic number.

665516660003 is a deficient number, since it is larger than the sum of its proper divisors (52761889405).

665516660003 is a wasteful number, since it uses less digits than its factorization.

665516660003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112021453.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 665516660003 in words is "six hundred sixty-five billion, five hundred sixteen million, six hundred sixty thousand, three".