12853446349 has 2 divisors, whose sum is σ = 12853446350. Its totient is φ = 12853446348.

The previous prime is 12853446329. The next prime is 12853446427. The reversal of 12853446349 is 94364435821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12241873449 + 611572900 = 110643^2 + 24730^2 .

It is a cyclic number.

It is not a de Polignac number, because 12853446349 - 2¹⁵ = 12853413581 is a prime.

It is a super-2 number, since 2×12853446349² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12853446329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6426723174 + 6426723175.

It is an arithmetic number, because the mean of its divisors is an integer number (6426723175).

Almost surely, 2^12853446349 is an apocalyptic number.

It is an amenable number.

12853446349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12853446349 is an equidigital number, since it uses as much as digits as its factorization.

12853446349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 49.

The spelling of 12853446349 in words is "twelve billion, eight hundred fifty-three million, four hundred forty-six thousand, three hundred forty-nine".