128259012113 has 2 divisors, whose sum is σ = 128259012114. Its totient is φ = 128259012112.

The previous prime is 128259012083. The next prime is 128259012173. The reversal of 128259012113 is 311210952821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102597214864 + 25661797249 = 320308^2 + 160193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128259012113 is a prime.

It is not a weakly prime, because it can be changed into another prime (128259012173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64129506056 + 64129506057.

It is an arithmetic number, because the mean of its divisors is an integer number (64129506057).

Almost surely, 2^128259012113 is an apocalyptic number.

It is an amenable number.

128259012113 is a deficient number, since it is larger than the sum of its proper divisors (1).

128259012113 is an equidigital number, since it uses as much as digits as its factorization.

128259012113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

Adding to 128259012113 its reverse (311210952821), we get a palindrome (439469964934).

The spelling of 128259012113 in words is "one hundred twenty-eight billion, two hundred fifty-nine million, twelve thousand, one hundred thirteen".