128895621133 has 2 divisors, whose sum is σ = 128895621134. Its totient is φ = 128895621132.

The previous prime is 128895621059. The next prime is 128895621161. The reversal of 128895621133 is 331126598821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86590124644 + 42305496489 = 294262^2 + 205683^2 .

It is a cyclic number.

It is not a de Polignac number, because 128895621133 - 2²¹ = 128893523981 is a prime.

It is a super-2 number, since 2×128895621133² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128895622133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64447810566 + 64447810567.

It is an arithmetic number, because the mean of its divisors is an integer number (64447810567).

Almost surely, 2^128895621133 is an apocalyptic number.

It is an amenable number.

128895621133 is a deficient number, since it is larger than the sum of its proper divisors (1).

128895621133 is an equidigital number, since it uses as much as digits as its factorization.

128895621133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 49.

The spelling of 128895621133 in words is "one hundred twenty-eight billion, eight hundred ninety-five million, six hundred twenty-one thousand, one hundred thirty-three".