12326103683581 has 2 divisors, whose sum is σ = 12326103683582. Its totient is φ = 12326103683580.

The previous prime is 12326103683573. The next prime is 12326103683599. The reversal of 12326103683581 is 18538630162321.

It is a happy number.

12326103683581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10730151527481 + 1595952156100 = 3275691^2 + 1263310^2 .

It is an emirp because it is prime and its reverse (18538630162321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12326103683581 - 2³ = 12326103683573 is a prime.

It is a super-2 number, since 2×12326103683581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12326103683681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6163051841790 + 6163051841791.

It is an arithmetic number, because the mean of its divisors is an integer number (6163051841791).

Almost surely, 2^{12326103683581} is an apocalyptic number.

It is an amenable number.

12326103683581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12326103683581 is an equidigital number, since it uses as much as digits as its factorization.

12326103683581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 12326103683581 in words is "twelve trillion, three hundred twenty-six billion, one hundred three million, six hundred eighty-three thousand, five hundred eighty-one".