12626292209 has 4 divisors (see below), whose sum is σ = 12628310004. Its totient is φ = 12624274416.

The previous prime is 12626292199. The next prime is 12626292247. The reversal of 12626292209 is 90229262621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90229262621 = 19 ⋅4748908559.

It can be written as a sum of positive squares in 2 ways, for example, as 6017415184 + 6608877025 = 77572^2 + 81295^2 .

It is a cyclic number.

It is not a de Polignac number, because 12626292209 - 2⁴ = 12626292193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12626292269) 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, 999482 + ... + 1012035.

It is an arithmetic number, because the mean of its divisors is an integer number (3157077501).

Almost surely, 2^12626292209 is an apocalyptic number.

It is an amenable number.

12626292209 is a deficient number, since it is larger than the sum of its proper divisors (2017795).

12626292209 is an equidigital number, since it uses as much as digits as its factorization.

12626292209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017794.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 12626292209 in words is "twelve billion, six hundred twenty-six million, two hundred ninety-two thousand, two hundred nine".