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80527657288 = 23131943947741
BaseRepresentation
bin100101011111111010…
…0101000100101001000
321200212002222211201111
41022333310220211020
52304410040013123
6100554403100104
75550356536021
oct1127764504510
9250762884644
1080527657288
1131173843891
1213734671634
137794551770
143c7cc8dc48
15216499b90d
hex12bfd28948

80527657288 has 64 divisors (see below), whose sum is σ = 175142721600. Its totient is φ = 34391589120.

The previous prime is 80527657229. The next prime is 80527657297. The reversal of 80527657288 is 88275672508.

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, 388903 + ... + 558838.

It is an arithmetic number, because the mean of its divisors is an integer number (2736605025).

Almost surely, 280527657288 is an apocalyptic number.

It is an amenable number.

80527657288 is an abundant number, since it is smaller than the sum of its proper divisors (94615064312).

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

80527657288 is a wasteful number, since it uses less digits than its factorization.

80527657288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947822 (or 947818 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 58.

The spelling of 80527657288 in words is "eighty billion, five hundred twenty-seven million, six hundred fifty-seven thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 13 19 26 38 43 52 76 86 104 152 172 247 344 494 559 817 988 1118 1634 1976 2236 3268 4472 6536 10621 21242 42484 84968 947741 1895482 3790964 7581928 12320633 18007079 24641266 36014158 40752863 49282532 72028316 81505726 98565064 144056632 163011452 234092027 326022904 468184054 529787219 774304397 936368108 1059574438 1548608794 1872736216 2119148876 3097217588 4238297752 6194435176 10065957161 20131914322 40263828644 80527657288