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68789803867 = 17219711011747
BaseRepresentation
bin100000000010000110…
…0010001101101011011
320120120002011002212121
41000010030101231123
52111340142210432
651333540122111
74653450454021
oct1000414215533
9216502132777
1068789803867
11271a0061884
12113b9696337
1366437c3275
143487dd0711
151bc925e197
hex1004311b5b

68789803867 has 48 divisors (see below), whose sum is σ = 78821095680. Its totient is φ = 59838912000.

The previous prime is 68789803847. The next prime is 68789803871. The reversal of 68789803867 is 76830898786.

It is not a de Polignac number, because 68789803867 - 223 = 68781415259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68789803796 and 68789803805.

It is not an unprimeable number, because it can be changed into a prime (68789803807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39375088 + ... + 39376834.

It is an arithmetic number, because the mean of its divisors is an integer number (1642106160).

Almost surely, 268789803867 is an apocalyptic number.

68789803867 is a deficient number, since it is larger than the sum of its proper divisors (10031291813).

68789803867 is a wasteful number, since it uses less digits than its factorization.

68789803867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1955 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 70.

The spelling of 68789803867 in words is "sixty-eight billion, seven hundred eighty-nine million, eight hundred three thousand, eight hundred sixty-seven".

Divisors: 1 17 19 71 101 289 323 1207 1349 1717 1747 1919 5491 7171 20519 22933 29189 29699 32623 33193 121907 124037 136249 176447 389861 504883 554591 564281 2072419 2108629 2316233 2356703 2999599 3352493 9592777 12527737 35846693 39375961 40063951 50993183 56992381 212971529 238027003 681087167 968870477 3620515993 4046459051 68789803867