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80684800680 = 23351161124849
BaseRepresentation
bin100101100100100110…
…0000101101010101000
321201021001200112221010
41023021030011222220
52310220302110210
6101022135143520
75554305330021
oct1131114055250
9251231615833
1080684800680
1131244514a60
1213779214ba0
1377bac81c13
143c95ab7c48
15217368c920
hex12c9305aa8

80684800680 has 64 divisors (see below), whose sum is σ = 264059352000. Its totient is φ = 19559951360.

The previous prime is 80684800649. The next prime is 80684800697. The reversal of 80684800680 is 8600848608.

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, 30561105 + ... + 30563744.

It is an arithmetic number, because the mean of its divisors is an integer number (4125927375).

Almost surely, 280684800680 is an apocalyptic number.

It is an amenable number.

80684800680 is an abundant number, since it is smaller than the sum of its proper divisors (183374551320).

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

80684800680 is a wasteful number, since it uses less digits than its factorization.

80684800680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61124874 (or 61124870 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 48.

The spelling of 80684800680 in words is "eighty billion, six hundred eighty-four million, eight hundred thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 88 110 120 132 165 220 264 330 440 660 1320 61124849 122249698 183374547 244499396 305624245 366749094 488998792 611248490 672373339 733498188 916872735 1222496980 1344746678 1466996376 1833745470 2017120017 2444993960 2689493356 3361866695 3667490940 4034240034 5378986712 6723733390 7334981880 8068480068 10085600085 13447466780 16136960136 20171200170 26894933560 40342400340 80684800680