665516660002 has 8 divisors (see below), whose sum is σ = 998288773056. Its totient is φ = 332753735652.

The previous prime is 665516659987. The next prime is 665516660077. The reversal of 665516660002 is 200066615566.

665516660002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2113158 + ... + 2407585.

It is an arithmetic number, because the mean of its divisors is an integer number (124786096632).

Almost surely, 2^665516660002 is an apocalyptic number.

665516660002 is a deficient number, since it is larger than the sum of its proper divisors (332772113054).

665516660002 is a wasteful number, since it uses less digits than its factorization.

665516660002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594352.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 665516660002 in words is "six hundred sixty-five billion, five hundred sixteen million, six hundred sixty thousand, two".