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68695840107 = 3217597610041
BaseRepresentation
bin111111111110100101…
…110101010101101011
320120022112100020211100
4333332211311111223
52111142113340412
651320342132443
74651230002136
oct777645652553
9216275306740
1068695840107
1127152013484
1211392121123
13662a1b40cb
14347973121d
151bc0d9cedc
hexffe97556b

68695840107 has 24 divisors (see below), whose sum is σ = 106844989680. Its totient is φ = 42372702720.

The previous prime is 68695840067. The next prime is 68695840159. The reversal of 68695840107 is 70104859686.

It is not a de Polignac number, because 68695840107 - 26 = 68695840043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68695840007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3795994 + ... + 3814047.

It is an arithmetic number, because the mean of its divisors is an integer number (4451874570).

Almost surely, 268695840107 is an apocalyptic number.

68695840107 is a deficient number, since it is larger than the sum of its proper divisors (38149149573).

68695840107 is a wasteful number, since it uses less digits than its factorization.

68695840107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7610123 (or 7610120 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 68695840107 in words is "sixty-eight billion, six hundred ninety-five million, eight hundred forty thousand, one hundred seven".

Divisors: 1 3 9 17 51 59 153 177 531 1003 3009 9027 7610041 22830123 68490369 129370697 388112091 448992419 1164336273 1346977257 4040931771 7632871123 22898613369 68695840107