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80173030812 = 22371756143579
BaseRepresentation
bin100101010101010101…
…1110101110110011100
321122221101200221122120
41022222223311312130
52303143243441222
6100455254142540
75535522342420
oct1125253656634
9248841627576
1080173030812
1131001649756
1213655951a50
137738c38804
143c47b3ab80
15214379c15c
hex12aaaf5d9c

80173030812 has 48 divisors (see below), whose sum is σ = 226370914560. Its totient is φ = 21559133952.

The previous prime is 80173030799. The next prime is 80173030853. The reversal of 80173030812 is 21803037108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28070362 + ... + 28073217.

It is an arithmetic number, because the mean of its divisors is an integer number (4716060720).

Almost surely, 280173030812 is an apocalyptic number.

It is an amenable number.

80173030812 is an abundant number, since it is smaller than the sum of its proper divisors (146197883748).

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

80173030812 is a wasteful number, since it uses less digits than its factorization.

80173030812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56143610 (or 56143608 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 80173030812 in words is "eighty billion, one hundred seventy-three million, thirty thousand, eight hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 17 21 28 34 42 51 68 84 102 119 204 238 357 476 714 1428 56143579 112287158 168430737 224574316 336861474 393005053 673722948 786010106 954440843 1179015159 1572020212 1908881686 2358030318 2863322529 3817763372 4716060636 5726645058 6681085901 11453290116 13362171802 20043257703 26724343604 40086515406 80173030812