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68056430265 = 3251512365117
BaseRepresentation
bin111111011000011110…
…101011011010111001
320111122222011212102100
4333120132223122321
52103334421232030
651133101254013
74626334053405
oct773036533271
9214588155370
1068056430265
112695409839a
1211233b64309
13655789a4a5
14341884a105
151b84b98360
hexfd87ab6b9

68056430265 has 12 divisors (see below), whose sum is σ = 117964479204. Its totient is φ = 36296762784.

The previous prime is 68056430213. The next prime is 68056430287. The reversal of 68056430265 is 56203465086.

68056430265 is a `hidden beast` number, since 6 + 80 + 564 + 3 + 0 + 2 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32309343504 + 35747086761 = 179748^2 + 189069^2 .

It is not a de Polignac number, because 68056430265 - 216 = 68056364729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1512365117 = 68056430265 / (6 + 8 + 0 + 5 + 6 + 4 + 3 + 0 + 2 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 68056430265.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 756182514 + ... + 756182603.

It is an arithmetic number, because the mean of its divisors is an integer number (9830373267).

Almost surely, 268056430265 is an apocalyptic number.

It is an amenable number.

68056430265 is a deficient number, since it is larger than the sum of its proper divisors (49908048939).

68056430265 is a wasteful number, since it uses less digits than its factorization.

68056430265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512365128 (or 1512365125 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 68056430265 in words is "sixty-eight billion, fifty-six million, four hundred thirty thousand, two hundred sixty-five".

Divisors: 1 3 5 9 15 45 1512365117 4537095351 7561825585 13611286053 22685476755 68056430265