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80080081440 = 2535473549649
BaseRepresentation
bin100101010010100100…
…1010001001000100000
321122200220210122002020
41022211021101020200
52303001000101230
6100442134021440
75533313314122
oct1124511211040
9248626718066
1080080081440
1130a64133497
121362a7a7880
1377228c3298
143c39663212
15213a53b810
hex12a5251220

80080081440 has 96 divisors (see below), whose sum is σ = 257619398400. Its totient is φ = 20900327424.

The previous prime is 80080081429. The next prime is 80080081453. The reversal of 80080081440 is 4418008008.

It is a tau number, because it is divible by the number of its divisors (96).

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, 1752265 + ... + 1797384.

It is an arithmetic number, because the mean of its divisors is an integer number (2683535400).

Almost surely, 280080081440 is an apocalyptic number.

80080081440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80080081440 is an abundant number, since it is smaller than the sum of its proper divisors (177539316960).

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

80080081440 is a wasteful number, since it uses less digits than its factorization.

80080081440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549714 (or 3549706 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

Adding to 80080081440 its reverse (4418008008), we get a palindrome (84498089448).

The spelling of 80080081440 in words is "eighty billion, eighty million, eighty-one thousand, four hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 47 48 60 80 94 96 120 141 160 188 235 240 282 376 470 480 564 705 752 940 1128 1410 1504 1880 2256 2820 3760 4512 5640 7520 11280 22560 3549649 7099298 10648947 14198596 17748245 21297894 28397192 35496490 42595788 53244735 56794384 70992980 85191576 106489470 113588768 141985960 166833503 170383152 212978940 283971920 333667006 340766304 425957880 500500509 567943840 667334012 834167515 851915760 1001001018 1334668024 1668335030 1703831520 2002002036 2502502545 2669336048 3336670060 4004004072 5005005090 5338672096 6673340120 8008008144 10010010180 13346680240 16016016288 20020020360 26693360480 40040040720 80080081440