12520615155341 has 2 divisors, whose sum is σ = 12520615155342. Its totient is φ = 12520615155340.

The previous prime is 12520615155337. The next prime is 12520615155383. The reversal of 12520615155341 is 14355151602521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8980870176100 + 3539744979241 = 2996810^2 + 1881421^2 .

It is an emirp because it is prime and its reverse (14355151602521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12520615155341 - 2² = 12520615155337 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12520615152341) 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, 6260307577670 + 6260307577671.

It is an arithmetic number, because the mean of its divisors is an integer number (6260307577671).

Almost surely, 2^{12520615155341} is an apocalyptic number.

It is an amenable number.

12520615155341 is a deficient number, since it is larger than the sum of its proper divisors (1).

12520615155341 is an equidigital number, since it uses as much as digits as its factorization.

12520615155341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180000, while the sum is 41.

Adding to 12520615155341 its reverse (14355151602521), we get a palindrome (26875766757862).

The spelling of 12520615155341 in words is "twelve trillion, five hundred twenty billion, six hundred fifteen million, one hundred fifty-five thousand, three hundred forty-one".