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68786454510 = 232517109412463
BaseRepresentation
bin100000000001111111…
…1011111111111101110
320120112211211221102100
41000003333133333232
52111333313021020
651333340235530
74653410134104
oct1000377377756
9216484757370
1068786454510
1127199184414
12113b853bba6
136642bbc8b7
14348779bc74
151bc8ceba90
hex1003fdffee

68786454510 has 96 divisors (see below), whose sum is σ = 191102820480. Its totient is φ = 17105624064.

The previous prime is 68786454439. The next prime is 68786454553. The reversal of 68786454510 is 1545468786.

68786454510 is a `hidden beast` number, since 6 + 8 + 7 + 86 + 4 + 545 + 10 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39462 + ... + 373001.

It is an arithmetic number, because the mean of its divisors is an integer number (1990654380).

Almost surely, 268786454510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68786454510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95551410240).

68786454510 is an abundant number, since it is smaller than the sum of its proper divisors (122316365970).

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

68786454510 is a wasteful number, since it uses less digits than its factorization.

68786454510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412602 (or 412599 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 68786454510 in words is "sixty-eight billion, seven hundred eighty-six million, four hundred fifty-four thousand, five hundred ten".

Divisors: 1 2 3 5 6 9 10 15 17 18 30 34 45 51 85 90 102 109 153 170 218 255 306 327 510 545 654 765 981 1090 1530 1635 1853 1962 3270 3706 4905 5559 9265 9810 11118 16677 18530 27795 33354 55590 83385 166770 412463 824926 1237389 2062315 2474778 3712167 4124630 6186945 7011871 7424334 12373890 14023742 18560835 21035613 35059355 37121670 42071226 44958467 63106839 70118710 89916934 105178065 126213678 134875401 210356130 224792335 269750802 315534195 404626203 449584670 631068390 674377005 764293939 809252406 1348754010 1528587878 2023131015 2292881817 3821469695 4046262030 4585763634 6878645451 7642939390 11464409085 13757290902 22928818170 34393227255 68786454510