12402443057 has 2 divisors, whose sum is σ = 12402443058. Its totient is φ = 12402443056.

The previous prime is 12402443003. The next prime is 12402443069. The reversal of 12402443057 is 75034420421.

12402443057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6437815696 + 5964627361 = 80236^2 + 77231^2 .

It is a cyclic number.

It is not a de Polignac number, because 12402443057 - 2¹⁸ = 12402180913 is a prime.

It is not a weakly prime, because it can be changed into another prime (12402443357) 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, 6201221528 + 6201221529.

It is an arithmetic number, because the mean of its divisors is an integer number (6201221529).

Almost surely, 2^12402443057 is an apocalyptic number.

It is an amenable number.

12402443057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402443057 is an equidigital number, since it uses as much as digits as its factorization.

12402443057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 12402443057 its reverse (75034420421), we get a palindrome (87436863478).

The spelling of 12402443057 in words is "twelve billion, four hundred two million, four hundred forty-three thousand, fifty-seven".