12554604917 has 2 divisors, whose sum is σ = 12554604918. Its totient is φ = 12554604916.

The previous prime is 12554604899. The next prime is 12554605027. The reversal of 12554604917 is 71940645521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8427056401 + 4127548516 = 91799^2 + 64246^2 .

It is a cyclic number.

It is not a de Polignac number, because 12554604917 - 2²⁸ = 12286169461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12554604617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277302458 + 6277302459.

It is an arithmetic number, because the mean of its divisors is an integer number (6277302459).

Almost surely, 2^12554604917 is an apocalyptic number.

It is an amenable number.

12554604917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12554604917 is an equidigital number, since it uses as much as digits as its factorization.

12554604917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

It can be divided in two parts, 12554604 and 917, that added together give a palindrome (12555521).

The spelling of 12554604917 in words is "twelve billion, five hundred fifty-four million, six hundred four thousand, nine hundred seventeen".