665016546065 has 8 divisors (see below), whose sum is σ = 802478067840. Its totient is φ = 529041095152.

The previous prime is 665016545989. The next prime is 665016546083. The reversal of 665016546065 is 560645610566.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665016546065 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371516729 + ... + 371518518.

It is an arithmetic number, because the mean of its divisors is an integer number (100309758480).

Almost surely, 2^665016546065 is an apocalyptic number.

It is an amenable number.

665016546065 is a deficient number, since it is larger than the sum of its proper divisors (137461521775).

665016546065 is a wasteful number, since it uses less digits than its factorization.

665016546065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743035431.

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 665016546065 in words is "six hundred sixty-five billion, sixteen million, five hundred forty-six thousand, sixty-five".