12544610213 has 4 divisors (see below), whose sum is σ = 12556569900. Its totient is φ = 12532650528.

The previous prime is 12544610201. The next prime is 12544610231. The reversal of 12544610213 is 31201644521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7261937089 + 5282673124 = 85217^2 + 72682^2 .

It is a cyclic number.

It is not a de Polignac number, because 12544610213 - 2²⁰ = 12543561637 is a prime.

It is a super-2 number, since 2×12544610213² (a number of 21 digits) contains 22 as substring.

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 (12544610413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5978270 + ... + 5980367.

It is an arithmetic number, because the mean of its divisors is an integer number (3139142475).

Almost surely, 2^12544610213 is an apocalyptic number.

It is an amenable number.

12544610213 is a deficient number, since it is larger than the sum of its proper divisors (11959687).

12544610213 is a wasteful number, since it uses less digits than its factorization.

12544610213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959686.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 12544610213 in words is "twelve billion, five hundred forty-four million, six hundred ten thousand, two hundred thirteen".