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8805921718468 = 22721717021155269
BaseRepresentation
bin1000000000100100100111…
…0101100000000011000100
31011011211121211021121110011
42000021021311200003010
52123234011424442333
630421215023240004
71566130643411500
oct200111165400304
934154554247404
108805921718468
112895630270736
12ba2791449004
134bb51965b454
142262cd277300
151040e007a9cd
hex80249d600c4

8805921718468 has 72 divisors (see below), whose sum is σ = 18982068661080. Its totient is φ = 3551736867840.

The previous prime is 8805921718463. The next prime is 8805921718483. The reversal of 8805921718468 is 8648171295088.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1924995303364 + 6880926415104 = 1387442^2 + 2623152^2 .

It is not an unprimeable number, because it can be changed into a prime (8805921718463) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 56636338 + ... + 56791606.

It is an arithmetic number, because the mean of its divisors is an integer number (263639842515).

Almost surely, 28805921718468 is an apocalyptic number.

It is an amenable number.

8805921718468 is an abundant number, since it is smaller than the sum of its proper divisors (10176146942612).

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

8805921718468 is a wasteful number, since it uses less digits than its factorization.

8805921718468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172325 (or 172316 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 67.

The spelling of 8805921718468 in words is "eight trillion, eight hundred five billion, nine hundred twenty-one million, seven hundred eighteen thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 14 17 28 34 49 68 98 119 196 238 476 833 1666 3332 17021 34042 68084 119147 155269 238294 289357 310538 476588 578714 621076 834029 1086883 1157428 1668058 2025499 2173766 2639573 3336116 4050998 4347532 5279146 7608181 8101996 10558292 14178493 15216362 18477011 28356986 30432724 36954022 56713972 73908044 129339077 258678154 517356308 2642833649 5285667298 10571334596 18499835543 36999671086 44928172033 73999342172 89856344066 129498848801 179712688132 258997697602 314497204231 517995395204 628994408462 1257988816924 2201480429617 4402960859234 8805921718468