12461261306 has 12 divisors (see below), whose sum is σ = 20240333262. Its totient is φ = 5751351216.

The previous prime is 12461261297. The next prime is 12461261317. The reversal of 12461261306 is 60316216421.

It can be written as a sum of positive squares in 3 ways, for example, as 4693483081 + 7767778225 = 68509^2 + 88135^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18433481 + ... + 18434156.

Almost surely, 2^12461261306 is an apocalyptic number.

12461261306 is a deficient number, since it is larger than the sum of its proper divisors (7779071956).

12461261306 is a wasteful number, since it uses less digits than its factorization.

12461261306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36867665 (or 36867652 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 12461261306 its reverse (60316216421), we get a palindrome (72777477727).

The spelling of 12461261306 in words is "twelve billion, four hundred sixty-one million, two hundred sixty-one thousand, three hundred six".