12860928581 has 2 divisors, whose sum is σ = 12860928582. Its totient is φ = 12860928580.

The previous prime is 12860928529. The next prime is 12860928583. The reversal of 12860928581 is 18582906821.

12860928581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11450926081 + 1410002500 = 107009^2 + 37550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12860928581 is a prime.

It is a super-2 number, since 2×12860928581² (a number of 21 digits) contains 22 as substring.

Together with 12860928583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12860928583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430464290 + 6430464291.

It is an arithmetic number, because the mean of its divisors is an integer number (6430464291).

Almost surely, 2^12860928581 is an apocalyptic number.

It is an amenable number.

12860928581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12860928581 is an equidigital number, since it uses as much as digits as its factorization.

12860928581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 50.

The spelling of 12860928581 in words is "twelve billion, eight hundred sixty million, nine hundred twenty-eight thousand, five hundred eighty-one".