1727686318513 has 8 divisors (see below), whose sum is σ = 1756319809320. Its totient is φ = 1699062852480.

The previous prime is 1727686318489. The next prime is 1727686318517. The reversal of 1727686318513 is 3158136867271.

It can be written as a sum of positive squares in 4 ways, for example, as 88894615104 + 1638791703409 = 298152^2 + 1280153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1727686318513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1727686318517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2158258 + ... + 2848411.

It is an arithmetic number, because the mean of its divisors is an integer number (219539976165).

Almost surely, 2^{1727686318513} is an apocalyptic number.

It is an amenable number.

1727686318513 is a deficient number, since it is larger than the sum of its proper divisors (28633490807).

1727686318513 is an equidigital number, since it uses as much as digits as its factorization.

1727686318513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012387.

The product of its digits is 10160640, while the sum is 58.

The spelling of 1727686318513 in words is "one trillion, seven hundred twenty-seven billion, six hundred eighty-six million, three hundred eighteen thousand, five hundred thirteen".