12823549088891 has 2 divisors, whose sum is σ = 12823549088892. Its totient is φ = 12823549088890.

The previous prime is 12823549088849. The next prime is 12823549088923. The reversal of 12823549088891 is 19888094532821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12823549088891 - 2³⁸ = 12548671181947 is a prime.

It is a super-2 number, since 2×12823549088891² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12823549088821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6411774544445 + 6411774544446.

It is an arithmetic number, because the mean of its divisors is an integer number (6411774544446).

Almost surely, 2^{12823549088891} is an apocalyptic number.

12823549088891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12823549088891 is an equidigital number, since it uses as much as digits as its factorization.

12823549088891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79626240, while the sum is 68.

The spelling of 12823549088891 in words is "twelve trillion, eight hundred twenty-three billion, five hundred forty-nine million, eighty-eight thousand, eight hundred ninety-one".