12461299187 has 2 divisors, whose sum is σ = 12461299188. Its totient is φ = 12461299186.

The previous prime is 12461299177. The next prime is 12461299231. The reversal of 12461299187 is 78199216421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12461299187 - 2⁴ = 12461299171 is a prime.

It is not a weakly prime, because it can be changed into another prime (12461299127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6230649593 + 6230649594.

It is an arithmetic number, because the mean of its divisors is an integer number (6230649594).

Almost surely, 2^12461299187 is an apocalyptic number.

12461299187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12461299187 is an equidigital number, since it uses as much as digits as its factorization.

12461299187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 50.

The spelling of 12461299187 in words is "twelve billion, four hundred sixty-one million, two hundred ninety-nine thousand, one hundred eighty-seven".