12461216986 has 16 divisors (see below), whose sum is σ = 19089020520. Its totient is φ = 6099596800.

The previous prime is 12461216981. The next prime is 12461217007. The reversal of 12461216986 is 68961216421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12457908225 + 3308761 = 111615^2 + 1819^2 .

It is not an unprimeable number, because it can be changed into a prime (12461216981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328591 + ... + 364546.

Almost surely, 2^12461216986 is an apocalyptic number.

12461216986 is a deficient number, since it is larger than the sum of its proper divisors (6627803534).

12461216986 is a wasteful number, since it uses less digits than its factorization.

12461216986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693329.

The product of its digits is 248832, while the sum is 46.

The spelling of 12461216986 in words is "twelve billion, four hundred sixty-one million, two hundred sixteen thousand, nine hundred eighty-six".