12554550317 has 2 divisors, whose sum is σ = 12554550318. Its totient is φ = 12554550316.

The previous prime is 12554550311. The next prime is 12554550353. The reversal of 12554550317 is 71305545521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12488956516 + 65593801 = 111754^2 + 8099^2 .

It is a cyclic number.

It is not a de Polignac number, because 12554550317 - 2⁴ = 12554550301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12554550311) 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, 6277275158 + 6277275159.

It is an arithmetic number, because the mean of its divisors is an integer number (6277275159).

Almost surely, 2^12554550317 is an apocalyptic number.

It is an amenable number.

12554550317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12554550317 is an equidigital number, since it uses as much as digits as its factorization.

12554550317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105000, while the sum is 38.

The spelling of 12554550317 in words is "twelve billion, five hundred fifty-four million, five hundred fifty thousand, three hundred seventeen".