12647783803381 has 2 divisors, whose sum is σ = 12647783803382. Its totient is φ = 12647783803380.

The previous prime is 12647783803351. The next prime is 12647783803411. The reversal of 12647783803381 is 18330838774621.

It is a balanced prime because it is at equal distance from previous prime (12647783803351) and next prime (12647783803411).

It can be written as a sum of positive squares in only one way, i.e., 10013167880881 + 2634615922500 = 3164359^2 + 1623150^2 .

It is an emirp because it is prime and its reverse (18330838774621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12647783803381 - 2¹³ = 12647783795189 is a prime.

It is a super-2 number, since 2×12647783803381² (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 (12647783803301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6323891901690 + 6323891901691.

It is an arithmetic number, because the mean of its divisors is an integer number (6323891901691).

Almost surely, 2^{12647783803381} is an apocalyptic number.

It is an amenable number.

12647783803381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12647783803381 is an equidigital number, since it uses as much as digits as its factorization.

12647783803381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 12647783803381 in words is "twelve trillion, six hundred forty-seven billion, seven hundred eighty-three million, eight hundred three thousand, three hundred eighty-one".