12432142777 has 2 divisors, whose sum is σ = 12432142778. Its totient is φ = 12432142776.

The previous prime is 12432142771. The next prime is 12432142817. The reversal of 12432142777 is 77724123421.

12432142777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (12432142817) can be obtained adding 12432142777 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12367886521 + 64256256 = 111211^2 + 8016^2 .

It is a cyclic number.

It is not a de Polignac number, because 12432142777 - 2³ = 12432142769 is a prime.

It is not a weakly prime, because it can be changed into another prime (12432142771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6216071388 + 6216071389.

It is an arithmetic number, because the mean of its divisors is an integer number (6216071389).

Almost surely, 2^12432142777 is an apocalyptic number.

It is an amenable number.

12432142777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12432142777 is an equidigital number, since it uses as much as digits as its factorization.

12432142777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 40.

The spelling of 12432142777 in words is "twelve billion, four hundred thirty-two million, one hundred forty-two thousand, seven hundred seventy-seven".