6128765000081 has 2 divisors, whose sum is σ = 6128765000082. Its totient is φ = 6128765000080.

The previous prime is 6128765000077. The next prime is 6128765000143. The reversal of 6128765000081 is 1800005678216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4006338509056 + 2122426491025 = 2001584^2 + 1456855^2 .

It is a cyclic number.

It is not a de Polignac number, because 6128765000081 - 2² = 6128765000077 is a prime.

It is a super-2 number, since 2×6128765000081² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6128764999996 and 6128765000041.

It is not a weakly prime, because it can be changed into another prime (6128765000381) 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, 3064382500040 + 3064382500041.

It is an arithmetic number, because the mean of its divisors is an integer number (3064382500041).

Almost surely, 2^{6128765000081} is an apocalyptic number.

It is an amenable number.

6128765000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6128765000081 is an equidigital number, since it uses as much as digits as its factorization.

6128765000081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 6128765000081 in words is "six trillion, one hundred twenty-eight billion, seven hundred sixty-five million, eighty-one", and thus it is an aban number.