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68167436080 = 2451675102353
BaseRepresentation
bin111111011111000110…
…001000011100110000
320111221201001112202211
4333133012020130300
52104101330423310
651152104421504
74632152434462
oct773706103460
9214851045684
1068167436080
1126a00816737
1211265177894
1365748955c3
1434294a4132
151b8e7c3c8a
hexfdf188730

68167436080 has 40 divisors (see below), whose sum is σ = 159438357792. Its totient is φ = 27103693824.

The previous prime is 68167436053. The next prime is 68167436083. The reversal of 68167436080 is 8063476186.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (68167436083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2537817 + ... + 2564536.

Almost surely, 268167436080 is an apocalyptic number.

It is an amenable number.

68167436080 is an abundant number, since it is smaller than the sum of its proper divisors (91270921712).

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

68167436080 is a wasteful number, since it uses less digits than its factorization.

68167436080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5102533 (or 5102527 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 68167436080 in words is "sixty-eight billion, one hundred sixty-seven million, four hundred thirty-six thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 167 334 668 835 1336 1670 2672 3340 6680 13360 5102353 10204706 20409412 25511765 40818824 51023530 81637648 102047060 204094120 408188240 852092951 1704185902 3408371804 4260464755 6816743608 8520929510 13633487216 17041859020 34083718040 68167436080