12915415135993 has 2 divisors, whose sum is σ = 12915415135994. Its totient is φ = 12915415135992.

The previous prime is 12915415135939. The next prime is 12915415135999. The reversal of 12915415135993 is 39953151451921.

Together with previous prime (12915415135939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11334453422224 + 1580961713769 = 3366668^2 + 1257363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12915415135993 is a prime.

It is not a weakly prime, because it can be changed into another prime (12915415135999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6457707567996 + 6457707567997.

It is an arithmetic number, because the mean of its divisors is an integer number (6457707567997).

Almost surely, 2^{12915415135993} is an apocalyptic number.

It is an amenable number.

12915415135993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12915415135993 is an equidigital number, since it uses as much as digits as its factorization.

12915415135993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6561000, while the sum is 58.

The spelling of 12915415135993 in words is "twelve trillion, nine hundred fifteen billion, four hundred fifteen million, one hundred thirty-five thousand, nine hundred ninety-three".