12512512613 has 2 divisors, whose sum is σ = 12512512614. Its totient is φ = 12512512612.

The previous prime is 12512512591. The next prime is 12512512657. The reversal of 12512512613 is 31621521521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10929029764 + 1583482849 = 104542^2 + 39793^2 .

It is a cyclic number.

It is not a de Polignac number, because 12512512613 - 2²⁰ = 12511464037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12512592613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256256306 + 6256256307.

It is an arithmetic number, because the mean of its divisors is an integer number (6256256307).

Almost surely, 2^12512512613 is an apocalyptic number.

It is an amenable number.

12512512613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512512613 is an equidigital number, since it uses as much as digits as its factorization.

12512512613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The spelling of 12512512613 in words is "twelve billion, five hundred twelve million, five hundred twelve thousand, six hundred thirteen".