12188375429 has 2 divisors, whose sum is σ = 12188375430. Its totient is φ = 12188375428.

The previous prime is 12188375399. The next prime is 12188375447. The reversal of 12188375429 is 92457388121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8210172100 + 3978203329 = 90610^2 + 63073^2 .

It is a cyclic number.

It is not a de Polignac number, because 12188375429 - 2²⁸ = 11919939973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12188375449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6094187714 + 6094187715.

It is an arithmetic number, because the mean of its divisors is an integer number (6094187715).

Almost surely, 2^12188375429 is an apocalyptic number.

It is an amenable number.

12188375429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12188375429 is an equidigital number, since it uses as much as digits as its factorization.

12188375429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 50.

The spelling of 12188375429 in words is "twelve billion, one hundred eighty-eight million, three hundred seventy-five thousand, four hundred twenty-nine".