12655310105 has 4 divisors (see below), whose sum is σ = 15186372132. Its totient is φ = 10124248080.

The previous prime is 12655310089. The next prime is 12655310111. The reversal of 12655310105 is 50101355621.

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 3265893904 + 9389416201 = 57148^2 + 96899^2 .

It is not a de Polignac number, because 12655310105 - 2⁴ = 12655310089 is a prime.

It is a super-2 number, since 2×12655310105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265531006 + ... + 1265531015.

It is an arithmetic number, because the mean of its divisors is an integer number (3796593033).

Almost surely, 2^12655310105 is an apocalyptic number.

It is an amenable number.

12655310105 is a deficient number, since it is larger than the sum of its proper divisors (2531062027).

12655310105 is an equidigital number, since it uses as much as digits as its factorization.

12655310105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531062026.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 12655310105 its reverse (50101355621), we get a palindrome (62756665726).

The spelling of 12655310105 in words is "twelve billion, six hundred fifty-five million, three hundred ten thousand, one hundred five".