128969567087 has 2 divisors, whose sum is σ = 128969567088. Its totient is φ = 128969567086.

The previous prime is 128969567059. The next prime is 128969567117. The reversal of 128969567087 is 780765969821.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (780765969821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128969567087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128969567047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64484783543 + 64484783544.

It is an arithmetic number, because the mean of its divisors is an integer number (64484783544).

Almost surely, 2^128969567087 is an apocalyptic number.

128969567087 is a deficient number, since it is larger than the sum of its proper divisors (1).

128969567087 is an equidigital number, since it uses as much as digits as its factorization.

128969567087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91445760, while the sum is 68.

The spelling of 128969567087 in words is "one hundred twenty-eight billion, nine hundred sixty-nine million, five hundred sixty-seven thousand, eighty-seven".