12615017662349 has 2 divisors, whose sum is σ = 12615017662350. Its totient is φ = 12615017662348.

The previous prime is 12615017662333. The next prime is 12615017662409. The reversal of 12615017662349 is 94326671051621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12434015916100 + 181001746249 = 3526190^2 + 425443^2 .

It is an emirp because it is prime and its reverse (94326671051621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12615017662349 - 2⁴ = 12615017662333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12615017662349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12615017662549) 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 as a sum of consecutive naturals, namely, 6307508831174 + 6307508831175.

It is an arithmetic number, because the mean of its divisors is an integer number (6307508831175).

Almost surely, 2^{12615017662349} is an apocalyptic number.

It is an amenable number.

12615017662349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12615017662349 is an equidigital number, since it uses as much as digits as its factorization.

12615017662349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 12615017662349 in words is "twelve trillion, six hundred fifteen billion, seventeen million, six hundred sixty-two thousand, three hundred forty-nine".