12864203987 has 2 divisors, whose sum is σ = 12864203988. Its totient is φ = 12864203986.

The previous prime is 12864203983. The next prime is 12864203999. The reversal of 12864203987 is 78930246821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12864203987 - 2² = 12864203983 is a prime.

It is not a weakly prime, because it can be changed into another prime (12864203981) 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, 6432101993 + 6432101994.

It is an arithmetic number, because the mean of its divisors is an integer number (6432101994).

Almost surely, 2^12864203987 is an apocalyptic number.

12864203987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12864203987 is an equidigital number, since it uses as much as digits as its factorization.

12864203987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 12864203987 in words is "twelve billion, eight hundred sixty-four million, two hundred three thousand, nine hundred eighty-seven".