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12813320080 = 2451130794729
BaseRepresentation
bin10111110111011101…
…11011111110010000
31020001222112002202101
423323232323332100
5202220202220310
65515241530144
7632345265211
oct137356737620
936058462671
1012813320080
115485870030
1225971a3954
1312927cc502
14897a53408
154eed7943a
hex2fbbbbf90

12813320080 has 80 divisors (see below), whose sum is σ = 32516668800. Its totient is φ = 4656890880.

The previous prime is 12813320063. The next prime is 12813320119. The reversal of 12813320080 is 8002331821.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2707156 + ... + 2711884.

It is an arithmetic number, because the mean of its divisors is an integer number (406458360).

Almost surely, 212813320080 is an apocalyptic number.

12813320080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12813320080 is an abundant number, since it is smaller than the sum of its proper divisors (19703348720).

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

12813320080 is a wasteful number, since it uses less digits than its factorization.

12813320080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832 (or 7826 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 12813320080 in words is "twelve billion, eight hundred thirteen million, three hundred twenty thousand, eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 440 880 3079 4729 6158 9458 12316 15395 18916 23645 24632 30790 33869 37832 47290 49264 52019 61580 67738 75664 94580 104038 123160 135476 169345 189160 208076 246320 260095 270952 338690 378320 416152 520190 541904 677380 832304 1040380 1354760 2080760 2709520 4161520 14560591 29121182 58242364 72802955 116484728 145605910 160166501 232969456 291211820 320333002 582423640 640666004 800832505 1164847280 1281332008 1601665010 2562664016 3203330020 6406660040 12813320080