12481685849 has 2 divisors, whose sum is σ = 12481685850. Its totient is φ = 12481685848.

The previous prime is 12481685833. The next prime is 12481685863. The reversal of 12481685849 is 94858618421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11857685449 + 624000400 = 108893^2 + 24980^2 .

It is a cyclic number.

It is not a de Polignac number, because 12481685849 - 2⁴ = 12481685833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12481685794 and 12481685803.

It is not a weakly prime, because it can be changed into another prime (12481685819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6240842924 + 6240842925.

It is an arithmetic number, because the mean of its divisors is an integer number (6240842925).

Almost surely, 2^12481685849 is an apocalyptic number.

It is an amenable number.

12481685849 is a deficient number, since it is larger than the sum of its proper divisors (1).

12481685849 is an equidigital number, since it uses as much as digits as its factorization.

12481685849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4423680, while the sum is 56.

The spelling of 12481685849 in words is "twelve billion, four hundred eighty-one million, six hundred eighty-five thousand, eight hundred forty-nine".