12289381061 has 2 divisors, whose sum is σ = 12289381062. Its totient is φ = 12289381060.

The previous prime is 12289381033. The next prime is 12289381063. The reversal of 12289381061 is 16018398221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10739384161 + 1549996900 = 103631^2 + 39370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12289381061 is a prime.

Together with 12289381063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12289381063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6144690530 + 6144690531.

It is an arithmetic number, because the mean of its divisors is an integer number (6144690531).

Almost surely, 2^12289381061 is an apocalyptic number.

It is an amenable number.

12289381061 is a deficient number, since it is larger than the sum of its proper divisors (1).

12289381061 is an equidigital number, since it uses as much as digits as its factorization.

12289381061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 12289381061 in words is "twelve billion, two hundred eighty-nine million, three hundred eighty-one thousand, sixty-one".