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68853133188 = 22337298773581
BaseRepresentation
bin100000000011111110…
…1110110111110000100
320120201111022120101000
41000013331312332010
52112002400230223
651344121333300
74655146655430
oct1000775667604
9216644276330
1068853133188
1127222887064
1211416937230
136653967738
1434925979c0
151bceabd543
hex1007f76f84

68853133188 has 192 divisors, whose sum is σ = 211343731200. Its totient is φ = 18967011840.

The previous prime is 68853133183. The next prime is 68853133243. The reversal of 68853133188 is 88133135886.

68853133188 is a `hidden beast` number, since 6 + 8 + 8 + 5 + 313 + 318 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (68853133183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19225558 + ... + 19229138.

It is an arithmetic number, because the mean of its divisors is an integer number (1100748600).

Almost surely, 268853133188 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 68853133188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105671865600).

68853133188 is an abundant number, since it is smaller than the sum of its proper divisors (142490598012).

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

68853133188 is a wasteful number, since it uses less digits than its factorization.

68853133188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4507 (or 4499 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 68853133188 in words is "sixty-eight billion, eight hundred fifty-three million, one hundred thirty-three thousand, one hundred eighty-eight".