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13255241513 = 17779720089
BaseRepresentation
bin11000101100001001…
…01110111100101001
31021012210002000222212
430112010232330221
5204121320212023
610031145454505
7646322456663
oct142604567451
937183060885
1013255241513
115692269158
12269b1a1435
13133322b097
148da60b533
15528a6de78
hex31612ef29

13255241513 has 4 divisors (see below), whose sum is σ = 14034961620. Its totient is φ = 12475521408.

The previous prime is 13255241449. The next prime is 13255241537. The reversal of 13255241513 is 31514255231.

13255241513 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, and also an emirpimes, since its reverse is a distinct semiprime: 31514255231 = 45768958983.

It can be written as a sum of positive squares in 2 ways, for example, as 5523908329 + 7731333184 = 74323^2 + 87928^2 .

It is a cyclic number.

It is not a de Polignac number, because 13255241513 - 26 = 13255241449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13255241513.

It is not an unprimeable number, because it can be changed into a prime (13255241413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389860028 + ... + 389860061.

It is an arithmetic number, because the mean of its divisors is an integer number (3508740405).

Almost surely, 213255241513 is an apocalyptic number.

It is an amenable number.

13255241513 is a deficient number, since it is larger than the sum of its proper divisors (779720107).

13255241513 is an equidigital number, since it uses as much as digits as its factorization.

13255241513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779720106.

The product of its digits is 18000, while the sum is 32.

Adding to 13255241513 its reverse (31514255231), we get a palindrome (44769496744).

The spelling of 13255241513 in words is "thirteen billion, two hundred fifty-five million, two hundred forty-one thousand, five hundred thirteen".

Divisors: 1 17 779720089 13255241513