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80873864208 = 243520800891
BaseRepresentation
bin100101101010001110…
…1010011110000010000
321201202020102222100000
41023110131103300100
52311112202123313
6101053011330000
75562062334444
oct1132435236020
9251666388300
1080873864208
1131331208205
12138105b0900
13781b1aa327
143cb2c50824
152185086673
hex12d4753c10

80873864208 has 60 divisors (see below), whose sum is σ = 234717265328. Its totient is φ = 26957953440.

The previous prime is 80873864207. The next prime is 80873864297. The reversal of 80873864208 is 80246837808.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (80873864207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10396558 + ... + 10404333.

Almost surely, 280873864208 is an apocalyptic number.

It is an amenable number.

80873864208 is an abundant number, since it is smaller than the sum of its proper divisors (153843401120).

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

80873864208 is a wasteful number, since it uses less digits than its factorization.

80873864208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20800914 (or 20800896 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 80873864208 in words is "eighty billion, eight hundred seventy-three million, eight hundred sixty-four thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 243 324 432 486 648 972 1296 1944 3888 20800891 41601782 62402673 83203564 124805346 166407128 187208019 249610692 332814256 374416038 499221384 561624057 748832076 998442768 1123248114 1497664152 1684872171 2246496228 2995328304 3369744342 4492992456 5054616513 6739488684 8985984912 10109233026 13478977368 20218466052 26957954736 40436932104 80873864208