128282928281 has 2 divisors, whose sum is σ = 128282928282. Its totient is φ = 128282928280.

The previous prime is 128282928223. The next prime is 128282928407. The reversal of 128282928281 is 182829282821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120017209225 + 8265719056 = 346435^2 + 90916^2 .

It is an emirp because it is prime and its reverse (182829282821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128282928281 - 2¹⁸ = 128282666137 is a prime.

It is a super-3 number, since 3×128282928281³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (128282928211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64141464140 + 64141464141.

It is an arithmetic number, because the mean of its divisors is an integer number (64141464141).

Almost surely, 2^128282928281 is an apocalyptic number.

It is an amenable number.

128282928281 is a deficient number, since it is larger than the sum of its proper divisors (1).

128282928281 is an equidigital number, since it uses as much as digits as its factorization.

128282928281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1179648, while the sum is 53.

It can be divided in two parts, 1 and 28282928281, that added together give a palindrome (28282928282).

The spelling of 128282928281 in words is "one hundred twenty-eight billion, two hundred eighty-two million, nine hundred twenty-eight thousand, two hundred eighty-one".