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68298547904 = 2619675631489
BaseRepresentation
bin111111100110111010…
…010010001011000000
320112021211202201101022
4333212322102023000
52104333412013104
651213110525012
74635334035626
oct774672221300
9215254681338
1068298547904
1126a68827a14
12112a1066768
136595ab0172
14343ca73516
151b9b071bbe
hexfe6e922c0

68298547904 has 112 divisors (see below), whose sum is σ = 145146979200. Its totient is φ = 31791108096.

The previous prime is 68298547903. The next prime is 68298547949. The reversal of 68298547904 is 40974589286.

68298547904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (68298547903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45867992 + ... + 45869480.

Almost surely, 268298547904 is an apocalyptic number.

68298547904 is a gapful number since it is divisible by the number (64) 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 68298547904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72573489600).

68298547904 is an abundant number, since it is smaller than the sum of its proper divisors (76848431296).

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

68298547904 is a wasteful number, since it uses less digits than its factorization.

With its successor (68298547905) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (2140).

68298547904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 62.

The spelling of 68298547904 in words is "sixty-eight billion, two hundred ninety-eight million, five hundred forty-seven thousand, nine hundred four".

Divisors: 1 2 4 8 16 19 32 38 64 67 76 134 152 268 304 536 563 608 1072 1126 1216 1273 1489 2144 2252 2546 2978 4288 4504 5092 5956 9008 10184 10697 11912 18016 20368 21394 23824 28291 36032 37721 40736 42788 47648 56582 75442 81472 85576 95296 99763 113164 150884 171152 199526 226328 301768 342304 399052 452656 603536 684608 716699 798104 838307 905312 1207072 1433398 1596208 1676614 1810624 1895497 2414144 2866796 3192416 3353228 3790994 5733592 6384832 6706456 7581988 11467184 13412912 15163976 15927833 22934368 26825824 30327952 31855666 45868736 53651648 56166569 60655904 63711332 112333138 121311808 127422664 224666276 254845328 449332552 509690656 898665104 1019381312 1067164811 1797330208 2134329622 3594660416 4268659244 8537318488 17074636976 34149273952 68298547904