12353655205 has 4 divisors (see below), whose sum is σ = 14824386252. Its totient is φ = 9882924160.

The previous prime is 12353655203. The next prime is 12353655227. The reversal of 12353655205 is 50255635321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50255635321 = 1009 ⋅49807369.

It can be written as a sum of positive squares in 2 ways, for example, as 5149210564 + 7204444641 = 71758^2 + 84879^2 .

It is not a de Polignac number, because 12353655205 - 2¹ = 12353655203 is a prime.

It is a super-2 number, since 2×12353655205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12353655203) 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, 1235365516 + ... + 1235365525.

It is an arithmetic number, because the mean of its divisors is an integer number (3706096563).

Almost surely, 2^12353655205 is an apocalyptic number.

It is an amenable number.

12353655205 is a deficient number, since it is larger than the sum of its proper divisors (2470731047).

12353655205 is an equidigital number, since it uses as much as digits as its factorization.

12353655205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470731046.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 12353655205 in words is "twelve billion, three hundred fifty-three million, six hundred fifty-five thousand, two hundred five".