1313563565265 has 16 divisors (see below), whose sum is σ = 2401944805248. Its totient is φ = 600486201216.

The previous prime is 1313563565263. The next prime is 1313563565311. The reversal of 1313563565265 is 5625653653131.

It is not a de Polignac number, because 1313563565265 - 2¹ = 1313563565263 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1313563565263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6255064492 + ... + 6255064701.

It is an arithmetic number, because the mean of its divisors is an integer number (150121550328).

Almost surely, 2^{1313563565265} is an apocalyptic number.

1313563565265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1313563565265 is a deficient number, since it is larger than the sum of its proper divisors (1088381239983).

1313563565265 is a wasteful number, since it uses less digits than its factorization.

1313563565265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12510129208.

The product of its digits is 7290000, while the sum is 51.

The spelling of 1313563565265 in words is "one trillion, three hundred thirteen billion, five hundred sixty-three million, five hundred sixty-five thousand, two hundred sixty-five".