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8868211236864 = 213313797
BaseRepresentation
bin1000000100001100101010…
…0101001010000000000000
31011101210101220000000000000
42001003022211022000000
52130244044034034424
630510000000000000
71603464353524110
oct201031245120000
934353356000000
108868211236864
112909a9505a861
12bb2876000000
134c4365530945
1422931bc2b040
15105a387ce3c9
hex810ca94a000

8868211236864 has 784 divisors, whose sum is σ = 30716870979648. Its totient is φ = 2507653251072.

The previous prime is 8868211236853. The next prime is 8868211236901. The reversal of 8868211236864 is 4686321128688.

8868211236864 is a `hidden beast` number, since 8 + 86 + 82 + 112 + 368 + 6 + 4 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 91424858064 + ... + 91424858160.

It is an arithmetic number, because the mean of its divisors is an integer number (39179682372).

Almost surely, 28868211236864 is an apocalyptic number.

8868211236864 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8868211236864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15358435489824).

8868211236864 is an abundant number, since it is smaller than the sum of its proper divisors (21848659742784).

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

8868211236864 is an frugal number, since it uses more digits than its factorization.

8868211236864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 109 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 63.

The spelling of 8868211236864 in words is "eight trillion, eight hundred sixty-eight billion, two hundred eleven million, two hundred thirty-six thousand, eight hundred sixty-four".