660944259305 has 16 divisors (see below), whose sum is σ = 883645403904. Its totient is φ = 470459354880.

The previous prime is 660944259293. The next prime is 660944259337. The reversal of 660944259305 is 503952449066.

It is a happy number.

It is not a de Polignac number, because 660944259305 - 2⁸ = 660944259049 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 127839632 + ... + 127844801.

It is an arithmetic number, because the mean of its divisors is an integer number (55227837744).

Almost surely, 2^660944259305 is an apocalyptic number.

It is an amenable number.

660944259305 is a deficient number, since it is larger than the sum of its proper divisors (222701144599).

660944259305 is a wasteful number, since it uses less digits than its factorization.

660944259305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255684496.

The product of its (nonzero) digits is 6998400, while the sum is 53.

The spelling of 660944259305 in words is "six hundred sixty billion, nine hundred forty-four million, two hundred fifty-nine thousand, three hundred five".