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68147407468 = 22711971203311
BaseRepresentation
bin111111011101111001…
…101110101001101100
320111220022100222200101
4333131321232221230
52104031214014333
651150111240444
74631520256150
oct773571565154
9214808328611
1068147407468
11269a0486968
121125a519124
1365706a215a
14342696d060
151b8cb6967d
hexfdde6ea6c

68147407468 has 24 divisors (see below), whose sum is σ = 136306870784. Its totient is φ = 29203448400.

The previous prime is 68147407409. The next prime is 68147407543. The reversal of 68147407468 is 86470474186.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233533 + ... + 436843.

Almost surely, 268147407468 is an apocalyptic number.

It is an amenable number.

68147407468 is an abundant number, since it is smaller than the sum of its proper divisors (68159463316).

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

68147407468 is a wasteful number, since it uses less digits than its factorization.

68147407468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215293 (or 215291 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 68147407468 in words is "sixty-eight billion, one hundred forty-seven million, four hundred seven thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 14 28 11971 23942 47884 83797 167594 203311 335188 406622 813244 1423177 2846354 5692708 2433835981 4867671962 9735343924 17036851867 34073703734 68147407468