12349579813 has 2 divisors, whose sum is σ = 12349579814. Its totient is φ = 12349579812.

The previous prime is 12349579793. The next prime is 12349579817. The reversal of 12349579813 is 31897594321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10842432129 + 1507147684 = 104127^2 + 38822^2 .

It is a cyclic number.

It is not a de Polignac number, because 12349579813 - 2⁹ = 12349579301 is a prime.

It is a super-2 number, since 2×12349579813² (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 (12349579817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6174789906 + 6174789907.

It is an arithmetic number, because the mean of its divisors is an integer number (6174789907).

Almost surely, 2^12349579813 is an apocalyptic number.

It is an amenable number.

12349579813 is a deficient number, since it is larger than the sum of its proper divisors (1).

12349579813 is an equidigital number, since it uses as much as digits as its factorization.

12349579813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The spelling of 12349579813 in words is "twelve billion, three hundred forty-nine million, five hundred seventy-nine thousand, eight hundred thirteen".