128463599009 has 2 divisors, whose sum is σ = 128463599010. Its totient is φ = 128463599008.

The previous prime is 128463598999. The next prime is 128463599063. The reversal of 128463599009 is 900995364821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107177664400 + 21285934609 = 327380^2 + 145897^2 .

It is a cyclic number.

It is not a de Polignac number, because 128463599009 - 2⁴ = 128463598993 is a prime.

It is not a weakly prime, because it can be changed into another prime (128463599809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64231799504 + 64231799505.

It is an arithmetic number, because the mean of its divisors is an integer number (64231799505).

Almost surely, 2^128463599009 is an apocalyptic number.

It is an amenable number.

128463599009 is a deficient number, since it is larger than the sum of its proper divisors (1).

128463599009 is an equidigital number, since it uses as much as digits as its factorization.

128463599009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 128463599009 in words is "one hundred twenty-eight billion, four hundred sixty-three million, five hundred ninety-nine thousand, nine".