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68842975170 = 2352294765839
BaseRepresentation
bin100000000011101011…
…1000110111111000010
320120200210012111012010
41000013113012333002
52111442300201140
651343115513350
74654664430264
oct1000727067702
9216623174163
1068842975170
1127218079202
1211413458856
13665181bc88
1434910b1b34
151bcdc63880
hex10075c6fc2

68842975170 has 16 divisors (see below), whose sum is σ = 165223140480. Its totient is φ = 18358126704.

The previous prime is 68842975169. The next prime is 68842975207. The reversal of 68842975170 is 7157924886.

It is a self number, because there is not a number n which added to its sum of digits gives 68842975170.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1147382890 + ... + 1147382949.

It is an arithmetic number, because the mean of its divisors is an integer number (10326446280).

Almost surely, 268842975170 is an apocalyptic number.

68842975170 is an abundant number, since it is smaller than the sum of its proper divisors (96380165310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68842975170 is a wasteful number, since it uses less digits than its factorization.

68842975170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294765849.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 68842975170 in words is "sixty-eight billion, eight hundred forty-two million, nine hundred seventy-five thousand, one hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 2294765839 4589531678 6884297517 11473829195 13768595034 22947658390 34421487585 68842975170