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80800404800 = 265261827873
BaseRepresentation
bin100101101000000010…
…1000101010101000000
321201120010012211222012
41023100011011111000
52310434400423200
6101041425032052
75560211052203
oct1132005052500
9251503184865
1080800404800
11312a37a4055
12137aba85628
137808bca01b
143ca71ab93a
15217d8c5a35
hex12d0145540

80800404800 has 84 divisors (see below), whose sum is σ = 202079076156. Its totient is φ = 31790284800.

The previous prime is 80800404793. The next prime is 80800404823. The reversal of 80800404800 is 840400808.

It can be written as a sum of positive squares in 6 ways, for example, as 18016082176 + 62784322624 = 134224^2 + 250568^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 316337 + ... + 511536.

Almost surely, 280800404800 is an apocalyptic number.

80800404800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80800404800 is an abundant number, since it is smaller than the sum of its proper divisors (121278671356).

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

80800404800 is a wasteful number, since it uses less digits than its factorization.

80800404800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827956 (or 827941 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The spelling of 80800404800 in words is "eighty billion, eight hundred million, four hundred four thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 61 64 80 100 122 160 200 244 305 320 400 488 610 800 976 1220 1525 1600 1952 2440 3050 3904 4880 6100 9760 12200 19520 24400 48800 97600 827873 1655746 3311492 4139365 6622984 8278730 13245968 16557460 20696825 26491936 33114920 41393650 50500253 52983872 66229840 82787300 101000506 132459680 165574600 202001012 252501265 264919360 331149200 404002024 505002530 662298400 808004048 1010005060 1262506325 1324596800 1616008096 2020010120 2525012650 3232016192 4040020240 5050025300 8080040480 10100050600 16160080960 20200101200 40400202400 80800404800