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BaseRepresentation
bin11101111011110100010…
…11101111010001110001
310122022212012210102010112
432331322023233101301
5113322431023100304
62104301421311105
7134211232640255
oct16757213572161
93568765712115
101028547081329
11367228016699
1214740a405495
1375cb7644441
151bb4ca45b6e
hexef7a2ef471

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".