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68825359680 = 26357114359367
BaseRepresentation
bin100000000011001001…
…1111010010101000000
320120122120001112021120
41000012103322111000
52111423243002210
651341250152240
74654361622210
oct1000623722500
9216576045246
1068825359680
1127209137450
1211409582680
13664ac91ccc
14348ca08240
151bcc434270
hex10064fa540

68825359680 has 896 divisors, whose sum is σ = 284274524160. Its totient is φ = 13694607360.

The previous prime is 68825359609. The next prime is 68825359693. The reversal of 68825359680 is 8695352886.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 187534857 + ... + 187535223.

Almost surely, 268825359680 is an apocalyptic number.

68825359680 is a gapful number since it is divisible by the number (60) 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 68825359680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142137262080).

68825359680 is an abundant number, since it is smaller than the sum of its proper divisors (215449164480).

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

68825359680 is a wasteful number, since it uses less digits than its factorization.

68825359680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 60.

The spelling of 68825359680 in words is "sixty-eight billion, eight hundred twenty-five million, three hundred fifty-nine thousand, six hundred eighty".