1316660382565 has 48 divisors (see below), whose sum is σ = 1797242832000. Its totient is φ = 924576681600.

The previous prime is 1316660382551. The next prime is 1316660382607. The reversal of 1316660382565 is 5652830666131.

It is not a de Polignac number, because 1316660382565 - 2⁵ = 1316660382533 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 2707936 + ... + 3156934.

It is an arithmetic number, because the mean of its divisors is an integer number (37442559000).

Almost surely, 2^{1316660382565} is an apocalyptic number.

It is an amenable number.

1316660382565 is a deficient number, since it is larger than the sum of its proper divisors (480582449435).

1316660382565 is a wasteful number, since it uses less digits than its factorization.

1316660382565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449194 (or 449183 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 1316660382565 in words is "one trillion, three hundred sixteen billion, six hundred sixty million, three hundred eighty-two thousand, five hundred sixty-five".