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68707853568 = 2832280310639
BaseRepresentation
bin111111111111010011…
…101010010100000000
320120100100221121012100
4333333103222110000
52111203202303233
651321451430400
74651434055614
oct777723522400
9216310847170
1068707853568
1127158879362
1211396155400
13662c82c273
14347b17b344
151bc1e72813
hexfff4ea500

68707853568 has 108 divisors (see below), whose sum is σ = 198190982080. Its totient is φ = 22892295168.

The previous prime is 68707853551. The next prime is 68707853593. The reversal of 68707853568 is 86535870786.

68707853568 is a `hidden beast` number, since 68 + 7 + 0 + 7 + 8 + 5 + 3 + 568 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6452793 + ... + 6463431.

Almost surely, 268707853568 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 68707853568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99095491040).

68707853568 is an abundant number, since it is smaller than the sum of its proper divisors (129483128512).

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

68707853568 is a wasteful number, since it uses less digits than its factorization.

68707853568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13464 (or 13447 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 68707853568 in words is "sixty-eight billion, seven hundred seven million, eight hundred fifty-three thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 256 288 384 576 768 1152 2304 2803 5606 8409 10639 11212 16818 21278 22424 25227 31917 33636 42556 44848 50454 63834 67272 85112 89696 95751 100908 127668 134544 170224 179392 191502 201816 255336 269088 340448 358784 383004 403632 510672 538176 680896 717568 766008 807264 1021344 1076352 1361792 1532016 1614528 2042688 2152704 2723584 3064032 3229056 4085376 6128064 6458112 8170752 12256128 24512256 29821117 59642234 89463351 119284468 178926702 238568936 268390053 357853404 477137872 536780106 715706808 954275744 1073560212 1431413616 1908551488 2147120424 2862827232 3817102976 4294240848 5725654464 7634205952 8588481696 11451308928 17176963392 22902617856 34353926784 68707853568