12138306353 has 2 divisors, whose sum is σ = 12138306354. Its totient is φ = 12138306352.

The previous prime is 12138306319. The next prime is 12138306359. The reversal of 12138306353 is 35360383121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7799185969 + 4339120384 = 88313^2 + 65872^2 .

It is a cyclic number.

It is not a de Polignac number, because 12138306353 - 2¹⁶ = 12138240817 is a prime.

It is a super-2 number, since 2×12138306353² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12138306359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6069153176 + 6069153177.

It is an arithmetic number, because the mean of its divisors is an integer number (6069153177).

Almost surely, 2^12138306353 is an apocalyptic number.

It is an amenable number.

12138306353 is a deficient number, since it is larger than the sum of its proper divisors (1).

12138306353 is an equidigital number, since it uses as much as digits as its factorization.

12138306353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 12138306353 its reverse (35360383121), we get a palindrome (47498689474).

The spelling of 12138306353 in words is "twelve billion, one hundred thirty-eight million, three hundred six thousand, three hundred fifty-three".