12706615105 has 4 divisors (see below), whose sum is σ = 15247938132. Its totient is φ = 10165292080.

The previous prime is 12706615093. The next prime is 12706615109. The reversal of 12706615105 is 50151660721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50151660721 = 907 ⋅55294003.

It can be written as a sum of positive squares in 2 ways, for example, as 3557883904 + 9148731201 = 59648^2 + 95649^2 .

It is not a de Polignac number, because 12706615105 - 2²⁹ = 12169744193 is a prime.

It is a super-2 number, since 2×12706615105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12706615109) 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, 1270661506 + ... + 1270661515.

It is an arithmetic number, because the mean of its divisors is an integer number (3811984533).

Almost surely, 2^12706615105 is an apocalyptic number.

It is an amenable number.

12706615105 is a deficient number, since it is larger than the sum of its proper divisors (2541323027).

12706615105 is an equidigital number, since it uses as much as digits as its factorization.

12706615105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541323026.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 12706615105 in words is "twelve billion, seven hundred six million, six hundred fifteen thousand, one hundred five".