12481311811 has 2 divisors, whose sum is σ = 12481311812. Its totient is φ = 12481311810.

The previous prime is 12481311761. The next prime is 12481311841. The reversal of 12481311811 is 11811318421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12481311811 - 2⁷ = 12481311683 is a prime.

It is not a weakly prime, because it can be changed into another prime (12481311841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6240655905 + 6240655906.

It is an arithmetic number, because the mean of its divisors is an integer number (6240655906).

Almost surely, 2^12481311811 is an apocalyptic number.

12481311811 is a deficient number, since it is larger than the sum of its proper divisors (1).

12481311811 is an equidigital number, since it uses as much as digits as its factorization.

12481311811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 31.

The spelling of 12481311811 in words is "twelve billion, four hundred eighty-one million, three hundred eleven thousand, eight hundred eleven".