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80665125460 = 225172231063903
BaseRepresentation
bin100101100100000000…
…1000010001001010100
321201012200122221121021
41023020001002021110
52310200233003320
6101020153330524
75553646152613
oct1131001021124
9251180587537
1080665125460
11312343a6747
1213772706a44
1377b6b8358a
143c9323587a
152171aa2daa
hex12c8042254

80665125460 has 48 divisors (see below), whose sum is σ = 180165758976. Its totient is φ = 30231839232.

The previous prime is 80665125433. The next prime is 80665125473. The reversal of 80665125460 is 6452156608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456132 + ... + 607771.

It is an arithmetic number, because the mean of its divisors is an integer number (3753453312).

Almost surely, 280665125460 is an apocalyptic number.

It is an amenable number.

80665125460 is an abundant number, since it is smaller than the sum of its proper divisors (99500633516).

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

80665125460 is a wasteful number, since it uses less digits than its factorization.

80665125460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064152 (or 1064150 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 80665125460 in words is "eighty billion, six hundred sixty-five million, one hundred twenty-five thousand, four hundred sixty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 223 340 446 892 1115 2230 3791 4460 7582 15164 18955 37910 75820 1063903 2127806 4255612 5319515 10639030 18086351 21278060 36172702 72345404 90431755 180863510 237250369 361727020 474500738 949001476 1186251845 2372503690 4033256273 4745007380 8066512546 16133025092 20166281365 40332562730 80665125460