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8668751868 = 22377532671
BaseRepresentation
bin10000001001011001…
…01010011111111100
3211101010210020000000
420010230222133330
5120223200024433
63552105234300
7424551114030
oct100454523774
924333706000
108668751868
113749314647
12181b192990
13a81c6139a
145c342a1c0
1535b099113
hex204b2a7fc

8668751868 has 192 divisors, whose sum is σ = 26502819840. Its totient is φ = 2429144640.

The previous prime is 8668751851. The next prime is 8668751873. The reversal of 8668751868 is 8681578668.

8668751868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 3244173 + ... + 3246843.

It is an arithmetic number, because the mean of its divisors is an integer number (138035520).

Almost surely, 28668751868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8668751868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13251409920).

8668751868 is an abundant number, since it is smaller than the sum of its proper divisors (17834067972).

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

8668751868 is a wasteful number, since it uses less digits than its factorization.

8668751868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756 (or 2736 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The square root of 8668751868 is about 93106.1322792436. The cubic root of 8668751868 is about 2054.2447733648.

The spelling of 8668751868 in words is "eight billion, six hundred sixty-eight million, seven hundred fifty-one thousand, eight hundred sixty-eight".