665516660032 has 28 divisors (see below), whose sum is σ = 1509296712160. Its totient is φ = 285221425536.

The previous prime is 665516659987. The next prime is 665516660077. The reversal of 665516660032 is 230066615566.

It is an interprime number because it is at equal distance from previous prime (665516659987) and next prime (665516660077).

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742763682 + ... + 742764577.

Almost surely, 2^665516660032 is an apocalyptic number.

It is an amenable number.

665516660032 is an abundant number, since it is smaller than the sum of its proper divisors (843780052128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665516660032 is a wasteful number, since it uses less digits than its factorization.

665516660032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485528278 (or 1485528268 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 665516660032 in words is "six hundred sixty-five billion, five hundred sixteen million, six hundred sixty thousand, thirty-two".