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68867459105 = 533014172521
BaseRepresentation
bin100000000100011010…
…0100000100000100001
320120202111021101211112
41000020310200200201
52112020032142410
651345352353105
74655412513104
oct1001064404041
9216674241745
1068867459105
112722a981365
121141b6a5795
136656912303
14349444673b
151bd0e9d105
hex1008d20821

68867459105 has 8 divisors (see below), whose sum is σ = 82666005864. Its totient is φ = 55077264000.

The previous prime is 68867459069. The next prime is 68867459107. The reversal of 68867459105 is 50195476886.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14511334369 + 54356124736 = 120463^2 + 233144^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68867459105 - 210 = 68867458081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68867459107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2069756 + ... + 2102765.

It is an arithmetic number, because the mean of its divisors is an integer number (10333250733).

Almost surely, 268867459105 is an apocalyptic number.

It is an amenable number.

68867459105 is a deficient number, since it is larger than the sum of its proper divisors (13798546759).

68867459105 is a wasteful number, since it uses less digits than its factorization.

68867459105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175827.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 68867459105 in words is "sixty-eight billion, eight hundred sixty-seven million, four hundred fifty-nine thousand, one hundred five".

Divisors: 1 5 3301 16505 4172521 20862605 13773491821 68867459105