12401440873 has 2 divisors, whose sum is σ = 12401440874. Its totient is φ = 12401440872.

The previous prime is 12401440837. The next prime is 12401440879. The reversal of 12401440873 is 37804410421.

It is a happy number.

Together with previous prime (12401440837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12241873449 + 159567424 = 110643^2 + 12632^2 .

It is a cyclic number.

It is not a de Polignac number, because 12401440873 - 2¹⁷ = 12401309801 is a prime.

It is not a weakly prime, because it can be changed into another prime (12401440879) 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, 6200720436 + 6200720437.

It is an arithmetic number, because the mean of its divisors is an integer number (6200720437).

Almost surely, 2^12401440873 is an apocalyptic number.

It is an amenable number.

12401440873 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401440873 is an equidigital number, since it uses as much as digits as its factorization.

12401440873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The spelling of 12401440873 in words is "twelve billion, four hundred one million, four hundred forty thousand, eight hundred seventy-three".