128283536305877 has 2 divisors, whose sum is σ = 128283536305878. Its totient is φ = 128283536305876.

The previous prime is 128283536305867. The next prime is 128283536305901. The reversal of 128283536305877 is 778503635382821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113358055356676 + 14925480949201 = 10646974^2 + 3863351^2 .

It is a cyclic number.

It is not a de Polignac number, because 128283536305877 - 2³⁴ = 128266356436693 is a prime.

It is a super-3 number, since 3×128283536305877³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128283536305867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64141768152938 + 64141768152939.

It is an arithmetic number, because the mean of its divisors is an integer number (64141768152939).

Almost surely, 2^{128283536305877} is an apocalyptic number.

It is an amenable number.

128283536305877 is a deficient number, since it is larger than the sum of its proper divisors (1).

128283536305877 is an equidigital number, since it uses as much as digits as its factorization.

128283536305877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 406425600, while the sum is 68.

The spelling of 128283536305877 in words is "one hundred twenty-eight trillion, two hundred eighty-three billion, five hundred thirty-six million, three hundred five thousand, eight hundred seventy-seven".