665234552444645 has 8 divisors (see below), whose sum is σ = 798281745513504. Its totient is φ = 532187453569104.

The previous prime is 665234552444629. The next prime is 665234552444687. The reversal of 665234552444645 is 546444255432566.

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 665234552444645 - 2⁴ = 665234552444629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 6946979 + ... + 37131248.

It is an arithmetic number, because the mean of its divisors is an integer number (99785218189188).

Almost surely, 2^{665234552444645} is an apocalyptic number.

It is an amenable number.

665234552444645 is a deficient number, since it is larger than the sum of its proper divisors (133047193068859).

665234552444645 is a wasteful number, since it uses less digits than its factorization.

665234552444645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47096659.

The product of its digits is 1658880000, while the sum is 65.

The spelling of 665234552444645 in words is "six hundred sixty-five trillion, two hundred thirty-four billion, five hundred fifty-two million, four hundred forty-four thousand, six hundred forty-five".