12557800213 has 6 divisors (see below), whose sum is σ = 14608053366. Its totient is φ = 10763828712.

The previous prime is 12557800187. The next prime is 12557800237. The reversal of 12557800213 is 31200875521.

It can be written as a sum of positive squares in only one way, i.e., 7688133124 + 4869667089 = 87682^2 + 69783^2 .

It is not a de Polignac number, because 12557800213 - 2⁵ = 12557800181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557800243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128140770 + ... + 128140867.

It is an arithmetic number, because the mean of its divisors is an integer number (2434675561).

Almost surely, 2^12557800213 is an apocalyptic number.

It is an amenable number.

12557800213 is a deficient number, since it is larger than the sum of its proper divisors (2050253153).

12557800213 is an equidigital number, since it uses as much as digits as its factorization.

12557800213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256281651 (or 256281644 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 12557800213 in words is "twelve billion, five hundred fifty-seven million, eight hundred thousand, two hundred thirteen".