665027532289 has 4 divisors (see below), whose sum is σ = 671128702420. Its totient is φ = 658926362160.

The previous prime is 665027532283. The next prime is 665027532307. The reversal of 665027532289 is 982235720566.

665027532289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189433857600 + 475593674689 = 435240^2 + 689633^2 .

It is a cyclic number.

It is not a de Polignac number, because 665027532289 - 2¹³ = 665027524097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665027532283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050584902 + ... + 3050585119.

It is an arithmetic number, because the mean of its divisors is an integer number (167782175605).

Almost surely, 2^665027532289 is an apocalyptic number.

It is an amenable number.

665027532289 is a deficient number, since it is larger than the sum of its proper divisors (6101170131).

665027532289 is a wasteful number, since it uses less digits than its factorization.

665027532289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101170130.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 665027532289 in words is "six hundred sixty-five billion, twenty-seven million, five hundred thirty-two thousand, two hundred eighty-nine".