128785351 has 2 divisors, whose sum is σ = 128785352. Its totient is φ = 128785350.

The previous prime is 128785331. The next prime is 128785367. The reversal of 128785351 is 153587821.

It is a strong prime.

It is an emirp because it is prime and its reverse (153587821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128785351 - 2¹⁵ = 128752583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128785331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64392675 + 64392676.

It is an arithmetic number, because the mean of its divisors is an integer number (64392676).

Almost surely, 2^128785351 is an apocalyptic number.

128785351 is a deficient number, since it is larger than the sum of its proper divisors (1).

128785351 is an equidigital number, since it uses as much as digits as its factorization.

128785351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 40.

The square root of 128785351 is about 11348.3633621769. The cubic root of 128785351 is about 504.9970277249.

The spelling of 128785351 in words is "one hundred twenty-eight million, seven hundred eighty-five thousand, three hundred fifty-one".