12380534609 has 2 divisors, whose sum is σ = 12380534610. Its totient is φ = 12380534608.

The previous prime is 12380534567. The next prime is 12380534611. The reversal of 12380534609 is 90643508321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11886450625 + 494083984 = 109025^2 + 22228^2 .

It is an emirp because it is prime and its reverse (90643508321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12380534609 is a prime.

Together with 12380534611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12380534009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6190267304 + 6190267305.

It is an arithmetic number, because the mean of its divisors is an integer number (6190267305).

Almost surely, 2^12380534609 is an apocalyptic number.

It is an amenable number.

12380534609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12380534609 is an equidigital number, since it uses as much as digits as its factorization.

12380534609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 12380534609 in words is "twelve billion, three hundred eighty million, five hundred thirty-four thousand, six hundred nine".