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80683779400 = 2352757631271
BaseRepresentation
bin100101100100100100…
…0001100010101001000
321201020222202122222221
41023021020030111020
52310220021420100
6101022101223424
75554263544360
oct1131110142510
9251228678887
1080683779400
1131243987724
1213778a01b74
1377ba9b5103
143c958cd9a0
15217353a01a
hex12c920c548

80683779400 has 48 divisors (see below), whose sum is σ = 214388331840. Its totient is φ = 27663009600.

The previous prime is 80683779383. The next prime is 80683779427. The reversal of 80683779400 is 497738608.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28814236 + ... + 28817035.

It is an arithmetic number, because the mean of its divisors is an integer number (4466423580).

Almost surely, 280683779400 is an apocalyptic number.

It is an amenable number.

80683779400 is an abundant number, since it is smaller than the sum of its proper divisors (133704552440).

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

80683779400 is a wasteful number, since it uses less digits than its factorization.

80683779400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57631294 (or 57631285 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 80683779400 in words is "eighty billion, six hundred eighty-three million, seven hundred seventy-nine thousand, four hundred".

Divisors: 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 100 140 175 200 280 350 700 1400 57631271 115262542 230525084 288156355 403418897 461050168 576312710 806837794 1152625420 1440781775 1613675588 2017094485 2305250840 2881563550 3227351176 4034188970 5763127100 8068377940 10085472425 11526254200 16136755880 20170944850 40341889700 80683779400