5121512515313 has 2 divisors, whose sum is σ = 5121512515314. Its totient is φ = 5121512515312.

The previous prime is 5121512515307. The next prime is 5121512515351. The reversal of 5121512515313 is 3135152151215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4791471457249 + 330041058064 = 2188943^2 + 574492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5121512515313 is a prime.

It is not a weakly prime, because it can be changed into another prime (5121512515303) 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, 2560756257656 + 2560756257657.

It is an arithmetic number, because the mean of its divisors is an integer number (2560756257657).

Almost surely, 2^{5121512515313} is an apocalyptic number.

It is an amenable number.

5121512515313 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121512515313 is an equidigital number, since it uses as much as digits as its factorization.

5121512515313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22500, while the sum is 35.

Adding to 5121512515313 its reverse (3135152151215), we get a palindrome (8256664666528).

The spelling of 5121512515313 in words is "five trillion, one hundred twenty-one billion, five hundred twelve million, five hundred fifteen thousand, three hundred thirteen".