128207677133 has 2 divisors, whose sum is σ = 128207677134. Its totient is φ = 128207677132.

The previous prime is 128207677127. The next prime is 128207677231. The reversal of 128207677133 is 331776702821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116426311369 + 11781365764 = 341213^2 + 108542^2 .

It is a cyclic number.

It is not a de Polignac number, because 128207677133 - 2²² = 128203482829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128207677123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64103838566 + 64103838567.

It is an arithmetic number, because the mean of its divisors is an integer number (64103838567).

Almost surely, 2^128207677133 is an apocalyptic number.

It is an amenable number.

128207677133 is a deficient number, since it is larger than the sum of its proper divisors (1).

128207677133 is an equidigital number, since it uses as much as digits as its factorization.

128207677133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 128207677133 in words is "one hundred twenty-eight billion, two hundred seven million, six hundred seventy-seven thousand, one hundred thirty-three".