12608856257 has 2 divisors, whose sum is σ = 12608856258. Its totient is φ = 12608856256.

The previous prime is 12608856233. The next prime is 12608856317. The reversal of 12608856257 is 75265880621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11572595776 + 1036260481 = 107576^2 + 32191^2 .

It is an emirp because it is prime and its reverse (75265880621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12608856257 - 2¹² = 12608852161 is a prime.

It is a super-2 number, since 2×12608856257² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12608856217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6304428128 + 6304428129.

It is an arithmetic number, because the mean of its divisors is an integer number (6304428129).

Almost surely, 2^12608856257 is an apocalyptic number.

It is an amenable number.

12608856257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12608856257 is an equidigital number, since it uses as much as digits as its factorization.

12608856257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 12608856257 in words is "twelve billion, six hundred eight million, eight hundred fifty-six thousand, two hundred fifty-seven".