12206578892317 has 4 divisors (see below), whose sum is σ = 12436891701660. Its totient is φ = 11976266082976.

The previous prime is 12206578892297. The next prime is 12206578892327. The reversal of 12206578892317 is 71329887560221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5186272920921 + 7020305971396 = 2277339^2 + 2649586^2 .

It is a cyclic number.

It is not a de Polignac number, because 12206578892317 - 2¹¹ = 12206578890269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12206578892327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115156404592 + ... + 115156404697.

It is an arithmetic number, because the mean of its divisors is an integer number (3109222925415).

Almost surely, 2^{12206578892317} is an apocalyptic number.

It is an amenable number.

12206578892317 is a deficient number, since it is larger than the sum of its proper divisors (230312809343).

12206578892317 is an equidigital number, since it uses as much as digits as its factorization.

12206578892317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230312809342.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 12206578892317 in words is "twelve trillion, two hundred six billion, five hundred seventy-eight million, eight hundred ninety-two thousand, three hundred seventeen".