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68760782688 = 25313297126759
BaseRepresentation
bin100000000001001110…
…1100100011101100000
320120111001112200022010
41000002131210131200
52111310230021223
651331022112520
74652646003123
oct1000235443540
9216431480263
1068760782688
112718573a834
12113aba1b740
13663a7a1980
1434841d83ba
151bc692a393
hex1002764760

68760782688 has 192 divisors, whose sum is σ = 203924044800. Its totient is φ = 20139141120.

The previous prime is 68760782677. The next prime is 68760782689. The reversal of 68760782688 is 88628706786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68760782689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2556253 + ... + 2583011.

It is an arithmetic number, because the mean of its divisors is an integer number (1062104400).

Almost surely, 268760782688 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 68760782688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101962022400).

68760782688 is an abundant number, since it is smaller than the sum of its proper divisors (135163262112).

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

68760782688 is a wasteful number, since it uses less digits than its factorization.

68760782688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26885 (or 26877 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 66.

The spelling of 68760782688 in words is "sixty-eight billion, seven hundred sixty million, seven hundred eighty-two thousand, six hundred eighty-eight".