12706483661 has 4 divisors (see below), whose sum is σ = 13144638300. Its totient is φ = 12268329024.

The previous prime is 12706483637. The next prime is 12706483663. The reversal of 12706483661 is 16638460721.

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 6269630761 + 6436852900 = 79181^2 + 80230^2 .

It is a cyclic number.

It is not a de Polignac number, because 12706483661 - 2⁶ = 12706483597 is a prime.

It is a super-2 number, since 2×12706483661² (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 (12706483663) 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, 219077276 + ... + 219077333.

It is an arithmetic number, because the mean of its divisors is an integer number (3286159575).

Almost surely, 2^12706483661 is an apocalyptic number.

It is an amenable number.

12706483661 is a deficient number, since it is larger than the sum of its proper divisors (438154639).

12706483661 is an equidigital number, since it uses as much as digits as its factorization.

12706483661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438154638.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 12706483661 in words is "twelve billion, seven hundred six million, four hundred eighty-three thousand, six hundred sixty-one".