128248786708487 has 2 divisors, whose sum is σ = 128248786708488. Its totient is φ = 128248786708486.

The previous prime is 128248786708457. The next prime is 128248786708571. The reversal of 128248786708487 is 784807687842821.

It is a weak prime.

It is an emirp because it is prime and its reverse (784807687842821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128248786708487 - 2⁶ = 128248786708423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128248786708457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64124393354243 + 64124393354244.

It is an arithmetic number, because the mean of its divisors is an integer number (64124393354244).

Almost surely, 2^{128248786708487} is an apocalyptic number.

128248786708487 is a deficient number, since it is larger than the sum of its proper divisors (1).

128248786708487 is an equidigital number, since it uses as much as digits as its factorization.

128248786708487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4315938816, while the sum is 80.

The spelling of 128248786708487 in words is "one hundred twenty-eight trillion, two hundred forty-eight billion, seven hundred eighty-six million, seven hundred eight thousand, four hundred eighty-seven".