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12568122580 = 2251348338933
BaseRepresentation
bin10111011010001111…
…00101010011010100
31012102220010210000111
423231013211103110
5201214414410310
65435042252404
7623310164536
oct135507452324
935386123014
1012568122580
11536a417572
122529057104
131253a7ba30
14873267856
154d859328a
hex2ed1e54d4

12568122580 has 24 divisors (see below), whose sum is σ = 28423293192. Its totient is φ = 4640537472.

The previous prime is 12568122569. The next prime is 12568122583. The reversal of 12568122580 is 8522186521.

It can be written as a sum of positive squares in 4 ways, for example, as 242238096 + 12325884484 = 15564^2 + 111022^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12568122583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24169207 + ... + 24169726.

It is an arithmetic number, because the mean of its divisors is an integer number (1184303883).

Almost surely, 212568122580 is an apocalyptic number.

12568122580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12568122580 is an abundant number, since it is smaller than the sum of its proper divisors (15855170612).

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

12568122580 is a wasteful number, since it uses less digits than its factorization.

12568122580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48338955 (or 48338953 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 12568122580 in words is "twelve billion, five hundred sixty-eight million, one hundred twenty-two thousand, five hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 48338933 96677866 193355732 241694665 483389330 628406129 966778660 1256812258 2513624516 3142030645 6284061290 12568122580