128387254847 has 2 divisors, whose sum is σ = 128387254848. Its totient is φ = 128387254846.

The previous prime is 128387254817. The next prime is 128387254867. The reversal of 128387254847 is 748452783821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (748452783821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128387254847 - 2⁶ = 128387254783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128387254817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64193627423 + 64193627424.

It is an arithmetic number, because the mean of its divisors is an integer number (64193627424).

Almost surely, 2^128387254847 is an apocalyptic number.

128387254847 is a deficient number, since it is larger than the sum of its proper divisors (1).

128387254847 is an equidigital number, since it uses as much as digits as its factorization.

128387254847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24084480, while the sum is 59.

The spelling of 128387254847 in words is "one hundred twenty-eight billion, three hundred eighty-seven million, two hundred fifty-four thousand, eight hundred forty-seven".