12826920766559 has 4 divisors (see below), whose sum is σ = 12827307024840. Its totient is φ = 12826534508280.

The previous prime is 12826920766537. The next prime is 12826920766579. The reversal of 12826920766559 is 95566702962821.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12826920766559 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 (12826920766579) 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, 193079324 + ... + 193145745.

It is an arithmetic number, because the mean of its divisors is an integer number (3206826756210).

Almost surely, 2^{12826920766559} is an apocalyptic number.

12826920766559 is a deficient number, since it is larger than the sum of its proper divisors (386258281).

12826920766559 is an equidigital number, since it uses as much as digits as its factorization.

12826920766559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386258280.

The product of its (nonzero) digits is 195955200, while the sum is 68.

The spelling of 12826920766559 in words is "twelve trillion, eight hundred twenty-six billion, nine hundred twenty million, seven hundred sixty-six thousand, five hundred fifty-nine".