12280826869 has 2 divisors, whose sum is σ = 12280826870. Its totient is φ = 12280826868.

The previous prime is 12280826867. The next prime is 12280826941. The reversal of 12280826869 is 96862808221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12086363844 + 194463025 = 109938^2 + 13945^2 .

It is a cyclic number.

It is not a de Polignac number, because 12280826869 - 2¹ = 12280826867 is a prime.

It is a super-2 number, since 2×12280826869² (a number of 21 digits) contains 22 as substring.

Together with 12280826867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12280826867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6140413434 + 6140413435.

It is an arithmetic number, because the mean of its divisors is an integer number (6140413435).

Almost surely, 2^12280826869 is an apocalyptic number.

It is an amenable number.

12280826869 is a deficient number, since it is larger than the sum of its proper divisors (1).

12280826869 is an equidigital number, since it uses as much as digits as its factorization.

12280826869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1327104, while the sum is 52.

The spelling of 12280826869 in words is "twelve billion, two hundred eighty million, eight hundred twenty-six thousand, eight hundred sixty-nine".