12452105213 has 4 divisors (see below), whose sum is σ = 12491386620. Its totient is φ = 12412823808.

The previous prime is 12452105201. The next prime is 12452105219. The reversal of 12452105213 is 31250125421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31250125421 = 41 ⋅762198181.

It can be written as a sum of positive squares in 2 ways, for example, as 210453049 + 12241652164 = 14507^2 + 110642^2 .

It is a cyclic number.

It is not a de Polignac number, because 12452105213 - 2²⁰ = 12451056637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12452105219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19640228 + ... + 19640861.

It is an arithmetic number, because the mean of its divisors is an integer number (3122846655).

Almost surely, 2^12452105213 is an apocalyptic number.

It is an amenable number.

12452105213 is a deficient number, since it is larger than the sum of its proper divisors (39281407).

12452105213 is an equidigital number, since it uses as much as digits as its factorization.

12452105213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39281406.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 12452105213 in words is "twelve billion, four hundred fifty-two million, one hundred five thousand, two hundred thirteen".