12651541213 has 2 divisors, whose sum is σ = 12651541214. Its totient is φ = 12651541212.

The previous prime is 12651541183. The next prime is 12651541283. The reversal of 12651541213 is 31214515621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8132071684 + 4519469529 = 90178^2 + 67227^2 .

It is an emirp because it is prime and its reverse (31214515621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12651541213 - 2²¹ = 12649444061 is a prime.

It is a super-2 number, since 2×12651541213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12651541283) 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, 6325770606 + 6325770607.

It is an arithmetic number, because the mean of its divisors is an integer number (6325770607).

Almost surely, 2^12651541213 is an apocalyptic number.

It is an amenable number.

12651541213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12651541213 is an equidigital number, since it uses as much as digits as its factorization.

12651541213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The spelling of 12651541213 in words is "twelve billion, six hundred fifty-one million, five hundred forty-one thousand, two hundred thirteen".