12128823799 has 2 divisors, whose sum is σ = 12128823800. Its totient is φ = 12128823798.

The previous prime is 12128823731. The next prime is 12128823829. The reversal of 12128823799 is 99732882121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12128823799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12128833799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6064411899 + 6064411900.

It is an arithmetic number, because the mean of its divisors is an integer number (6064411900).

Almost surely, 2^12128823799 is an apocalyptic number.

12128823799 is a deficient number, since it is larger than the sum of its proper divisors (1).

12128823799 is an equidigital number, since it uses as much as digits as its factorization.

12128823799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The spelling of 12128823799 in words is "twelve billion, one hundred twenty-eight million, eight hundred twenty-three thousand, seven hundred ninety-nine".