128686301026837 has 2 divisors, whose sum is σ = 128686301026838. Its totient is φ = 128686301026836.

The previous prime is 128686301026687. The next prime is 128686301026883. The reversal of 128686301026837 is 738620103686821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126618891280036 + 2067409746801 = 11252506^2 + 1437849^2 .

It is a cyclic number.

It is not a de Polignac number, because 128686301026837 - 2³¹ = 128684153543189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128686301026897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64343150513418 + 64343150513419.

It is an arithmetic number, because the mean of its divisors is an integer number (64343150513419).

Almost surely, 2^{128686301026837} is an apocalyptic number.

It is an amenable number.

128686301026837 is a deficient number, since it is larger than the sum of its proper divisors (1).

128686301026837 is an equidigital number, since it uses as much as digits as its factorization.

128686301026837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27869184, while the sum is 61.

The spelling of 128686301026837 in words is "one hundred twenty-eight trillion, six hundred eighty-six billion, three hundred one million, twenty-six thousand, eight hundred thirty-seven".