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68825851886 = 21115217205589
BaseRepresentation
bin100000000011001010…
…1110010011111101110
320120122120222112110102
41000012111302133232
52111423404230021
651341304511102
74654366042211
oct1000625623756
9216576875412
1068825851886
1127209443230
121140977b492
13664b10505c
14348cad5778
151bcc4d000b
hex10065727ee

68825851886 has 16 divisors (see below), whose sum is σ = 112632070320. Its totient is φ = 31282270080.

The previous prime is 68825851819. The next prime is 68825851909. The reversal of 68825851886 is 68815852886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231980 + ... + 437568.

It is an arithmetic number, because the mean of its divisors is an integer number (7039504395).

Almost surely, 268825851886 is an apocalyptic number.

68825851886 is a deficient number, since it is larger than the sum of its proper divisors (43806218434).

68825851886 is a wasteful number, since it uses less digits than its factorization.

68825851886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220819.

The product of its digits is 58982400, while the sum is 65.

The spelling of 68825851886 in words is "sixty-eight billion, eight hundred twenty-five million, eight hundred fifty-one thousand, eight hundred eighty-six".

Divisors: 1 2 11 22 15217 30434 167387 205589 334774 411178 2261479 4522958 3128447813 6256895626 34412925943 68825851886