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80805312504 = 23337311723957
BaseRepresentation
bin100101101000001011…
…1110011011111111000
321201120110110012002000
41023100113303133320
52310442130000004
6101042122141000
75560300552320
oct1132027633770
9251513405060
1080805312504
11312a6546304
12137b1651760
137809c27aa7
143ca7ac8280
15217e044c39
hex12d05f37f8

80805312504 has 128 divisors (see below), whose sum is σ = 264799948800. Its totient is φ = 22342469760.

The previous prime is 80805312487. The next prime is 80805312593. The reversal of 80805312504 is 40521350808.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815107 + ... + 908850.

It is an arithmetic number, because the mean of its divisors is an integer number (2068749600).

Almost surely, 280805312504 is an apocalyptic number.

80805312504 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

80805312504 is an abundant number, since it is smaller than the sum of its proper divisors (183994636296).

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

80805312504 is a wasteful number, since it uses less digits than its factorization.

80805312504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724010 (or 1724000 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 80805312504 in words is "eighty billion, eight hundred five million, three hundred twelve thousand, five hundred four".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 31 36 42 54 56 62 63 72 84 93 108 124 126 168 186 189 216 217 248 252 279 372 378 434 504 558 651 744 756 837 868 1116 1302 1512 1674 1736 1953 2232 2604 3348 3906 5208 5859 6696 7812 11718 15624 23436 46872 1723957 3447914 5171871 6895828 10343742 12067699 13791656 15515613 20687484 24135398 31031226 36203097 41374968 46546839 48270796 53442667 62062452 72406194 93093678 96541592 106885334 108609291 124124904 144812388 160328001 186187356 213770668 217218582 289624776 320656002 325827873 372374712 374098669 427541336 434437164 480984003 641312004 651655746 748197338 868874328 961968006 1122296007 1282624008 1303311492 1442952009 1496394676 1923936012 2244592014 2606622984 2885904018 2992789352 3366888021 3847872024 4489184028 5771808036 6733776042 8978368056 10100664063 11543616072 13467552084 20201328126 26935104168 40402656252 80805312504