12617045734649 has 2 divisors, whose sum is σ = 12617045734650. Its totient is φ = 12617045734648.

The previous prime is 12617045734591. The next prime is 12617045734687. The reversal of 12617045734649 is 94643754071621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12612669250624 + 4376484025 = 3551432^2 + 66155^2 .

It is a cyclic number.

It is not a de Polignac number, because 12617045734649 - 2²⁴ = 12617028957433 is a prime.

It is not a weakly prime, because it can be changed into another prime (12617045730649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6308522867324 + 6308522867325.

It is an arithmetic number, because the mean of its divisors is an integer number (6308522867325).

Almost surely, 2^{12617045734649} is an apocalyptic number.

It is an amenable number.

12617045734649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12617045734649 is an equidigital number, since it uses as much as digits as its factorization.

12617045734649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 12617045734649 in words is "twelve trillion, six hundred seventeen billion, forty-five million, seven hundred thirty-four thousand, six hundred forty-nine".