128063777 has 2 divisors, whose sum is σ = 128063778. Its totient is φ = 128063776.

The previous prime is 128063753. The next prime is 128063779. The reversal of 128063777 is 777360821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127260961 + 802816 = 11281^2 + 896^2 .

It is an emirp because it is prime and its reverse (777360821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128063777 - 2¹² = 128059681 is a prime.

Together with 128063779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128063779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64031888 + 64031889.

It is an arithmetic number, because the mean of its divisors is an integer number (64031889).

Almost surely, 2^128063777 is an apocalyptic number.

It is an amenable number.

128063777 is a deficient number, since it is larger than the sum of its proper divisors (1).

128063777 is an equidigital number, since it uses as much as digits as its factorization.

128063777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 128063777 is about 11316.5267198023. The cubic root of 128063777 is about 504.0521081276.

The spelling of 128063777 in words is "one hundred twenty-eight million, sixty-three thousand, seven hundred seventy-seven".