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68888827611 = 3219402858641
BaseRepresentation
bin100000000101000011…
…0000001011011011011
320120210222111000220200
41000022012001123123
52112041014440421
651351434353243
74656062242002
oct1001206013333
9216728430820
1068888827611
1127240a4688a
121142688b823
13665b1845b6
143497209c39
151bd2cbe726
hex100a1816db

68888827611 has 12 divisors (see below), whose sum is σ = 104743246920. Its totient is φ = 43508733120.

The previous prime is 68888827589. The next prime is 68888827661. The reversal of 68888827611 is 11672888886.

68888827611 is a `hidden beast` number, since 6 + 8 + 8 + 8 + 8 + 8 + 2 + 7 + 611 = 666.

It is not a de Polignac number, because 68888827611 - 226 = 68821718747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68888827661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201429150 + ... + 201429491.

It is an arithmetic number, because the mean of its divisors is an integer number (8728603910).

Almost surely, 268888827611 is an apocalyptic number.

68888827611 is a deficient number, since it is larger than the sum of its proper divisors (35854419309).

68888827611 is a wasteful number, since it uses less digits than its factorization.

68888827611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402858666 (or 402858663 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 63.

The spelling of 68888827611 in words is "sixty-eight billion, eight hundred eighty-eight million, eight hundred twenty-seven thousand, six hundred eleven".

Divisors: 1 3 9 19 57 171 402858641 1208575923 3625727769 7654314179 22962942537 68888827611