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80868228868 = 22719223967891
BaseRepresentation
bin100101101010000011…
…1110011111100000100
321201201211211200002201
41023110013303330010
52311104231310433
6101052250444244
75561663414050
oct1132407637404
9251654750081
1080868228868
11313290092a9
121380a733684
137819c862cb
143cb21c4c60
152184821a7d
hex12d41f3f04

80868228868 has 48 divisors (see below), whose sum is σ = 170327449600. Its totient is φ = 32818569120.

The previous prime is 80868228839. The next prime is 80868228923. The reversal of 80868228868 is 86882286808.

It is a happy number.

It is a super-2 number, since 2×808682288682 (a number of 23 digits) contains 22 as substring.

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, 1157203 + ... + 1225093.

Almost surely, 280868228868 is an apocalyptic number.

It is an amenable number.

80868228868 is an abundant number, since it is smaller than the sum of its proper divisors (89459220732).

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

80868228868 is a wasteful number, since it uses less digits than its factorization.

80868228868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70160 (or 70158 counting only the distinct ones).

The product of its (nonzero) digits is 37748736, while the sum is 64.

The spelling of 80868228868 in words is "eighty billion, eight hundred sixty-eight million, two hundred twenty-eight thousand, eight hundred sixty-eight".

Divisors: 1 2 4 7 14 19 28 38 76 133 266 532 2239 4478 8956 15673 31346 42541 62692 67891 85082 135782 170164 271564 297787 475237 595574 950474 1191148 1289929 1900948 2579858 5159716 9029503 18059006 36118012 152007949 304015898 608031796 1064055643 2128111286 2888151031 4256222572 5776302062 11552604124 20217057217 40434114434 80868228868