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206764293489 = 31331478394337
BaseRepresentation
bin1100000010010000011…
…1001011110101110001
3201202200202111101201220
43000210013023311301
511341423124342424
6234553004215253
720636545332165
oct3004407136561
9652622441656
10206764293489
117a763064aa6
12340a4b3a529
13166618485c0
14a016602ca5
1555a222e579
hex30241cbd71

206764293489 has 64 divisors (see below), whose sum is σ = 313435422720. Its totient is φ = 120343772160.

The previous prime is 206764293469. The next prime is 206764293497. The reversal of 206764293489 is 984392467602.

It is not a de Polignac number, because 206764293489 - 27 = 206764293361 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (206764293469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47672329 + ... + 47676665.

It is an arithmetic number, because the mean of its divisors is an integer number (4897428480).

Almost surely, 2206764293489 is an apocalyptic number.

It is an amenable number.

206764293489 is a deficient number, since it is larger than the sum of its proper divisors (106671129231).

206764293489 is a wasteful number, since it uses less digits than its factorization.

206764293489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270.

The product of its (nonzero) digits is 31352832, while the sum is 60.

The spelling of 206764293489 in words is "two hundred six billion, seven hundred sixty-four million, two hundred ninety-three thousand, four hundred eighty-nine".

Divisors: 1 3 13 31 39 47 93 141 403 611 839 1209 1457 1833 2517 4337 4371 10907 13011 18941 26009 32721 39433 56381 56823 78027 118299 134447 169143 203839 338117 403341 512629 611517 1014351 1222423 1537887 1747811 2649907 3638743 3667269 5243433 6319009 7949721 10916229 15891499 18957027 47303659 47674497 82147117 112801033 141910977 171020921 246441351 338403099 513062763 1466413429 2223271973 4399240287 5301648551 6669815919 15904945653 68921431163 206764293489