128284819277 has 2 divisors, whose sum is σ = 128284819278. Its totient is φ = 128284819276.

The previous prime is 128284819259. The next prime is 128284819283. The reversal of 128284819277 is 772918482821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94629449161 + 33655370116 = 307619^2 + 183454^2 .

It is a cyclic number.

It is not a de Polignac number, because 128284819277 - 2¹⁶ = 128284753741 is a prime.

It is a super-3 number, since 3×128284819277³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128284819237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64142409638 + 64142409639.

It is an arithmetic number, because the mean of its divisors is an integer number (64142409639).

Almost surely, 2^128284819277 is an apocalyptic number.

It is an amenable number.

128284819277 is a deficient number, since it is larger than the sum of its proper divisors (1).

128284819277 is an equidigital number, since it uses as much as digits as its factorization.

128284819277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7225344, while the sum is 59.

The spelling of 128284819277 in words is "one hundred twenty-eight billion, two hundred eighty-four million, eight hundred nineteen thousand, two hundred seventy-seven".