1028547081329 has 2 divisors, whose sum is σ = 1028547081330.
Its totient is φ = 1028547081328.
The previous prime is 1028547081307. The next prime is 1028547081391. The reversal of 1028547081329 is 9231807458201.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 894537640000 + 134009441329 = 945800^2 + 366073^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1028547081329 is a prime.
It is not a weakly prime, because it can be changed into another prime (1028547081829) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514273540664 + 514273540665.
It is an arithmetic number, because the mean of its divisors is an integer number (514273540665).
Almost surely, 21028547081329 is an apocalyptic number.
It is an amenable number.
1028547081329 is a deficient number, since it is larger than the sum of its proper divisors (1).
1028547081329 is an equidigital number, since it uses as much as digits as its factorization.
1028547081329 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 967680, while the sum is 50.
The spelling of 1028547081329 in words is "one trillion, twenty-eight billion, five hundred forty-seven million, eighty-one thousand, three hundred twenty-nine".