73128908189369 has 2 divisors, whose sum is σ = 73128908189370. Its totient is φ = 73128908189368.

The previous prime is 73128908189327. The next prime is 73128908189401. The reversal of 73128908189369 is 96398180982137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47726501782969 + 25402406406400 = 6908437^2 + 5040080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73128908189369 is a prime.

It is a super-2 number, since 2×73128908189369² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73128908189296 and 73128908189305.

It is not a weakly prime, because it can be changed into another prime (73128908189069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36564454094684 + 36564454094685.

It is an arithmetic number, because the mean of its divisors is an integer number (36564454094685).

Almost surely, 2^{73128908189369} is an apocalyptic number.

It is an amenable number.

73128908189369 is a deficient number, since it is larger than the sum of its proper divisors (1).

73128908189369 is an equidigital number, since it uses as much as digits as its factorization.

73128908189369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282175488, while the sum is 74.

The spelling of 73128908189369 in words is "seventy-three trillion, one hundred twenty-eight billion, nine hundred eight million, one hundred eighty-nine thousand, three hundred sixty-nine".