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12661212361341 = 313013243969347
BaseRepresentation
bin1011100000111110101100…
…0100001011001001111101
31122211101210122210022010210
42320033223010023021331
53124420130331030331
642532251453423033
72444512434236265
oct270175304131175
948741718708123
1012661212361341
114041654334485
1215059b249aa79
1370ac4100903b
1431ab3d7427a5
1516e531b6e446
hexb83eb10b27d

12661212361341 has 8 divisors (see below), whose sum is σ = 16894592364384. Its totient is φ = 8434320299600.

The previous prime is 12661212361327. The next prime is 12661212361439. The reversal of 12661212361341 is 14316321216621.

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

It is a cyclic number.

It is not a de Polignac number, because 12661212361341 - 26 = 12661212361277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12661212361341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661212361841) 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 7 ways as a sum of consecutive naturals, for example, 1621980771 + ... + 1621988576.

It is an arithmetic number, because the mean of its divisors is an integer number (2111824045548).

Almost surely, 212661212361341 is an apocalyptic number.

It is an amenable number.

12661212361341 is a deficient number, since it is larger than the sum of its proper divisors (4233380003043).

12661212361341 is a wasteful number, since it uses less digits than its factorization.

12661212361341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243970651.

The product of its digits is 62208, while the sum is 39.

Adding to 12661212361341 its reverse (14316321216621), we get a palindrome (26977533577962).

The spelling of 12661212361341 in words is "twelve trillion, six hundred sixty-one billion, two hundred twelve million, three hundred sixty-one thousand, three hundred forty-one".

Divisors: 1 3 1301 3903 3243969347 9731908041 4220404120447 12661212361341