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10561820439690 = 2325131271392691901
BaseRepresentation
bin1001100110110001110110…
…0011100011010010001010
31101101200220102111200121100
42121230131203203102022
52341021102013032230
634244011110522230
72140031520316002
oct231543543432212
941350812450540
1010561820439690
113402274323893
121226b50366376
135b7c8ac2bb10
142872a28bd002
15134b0d01d660
hex99b1d8e348a

10561820439690 has 384 divisors, whose sum is σ = 30147838156800. Its totient is φ = 2549943244800.

The previous prime is 10561820439497. The next prime is 10561820439691. The reversal of 10561820439690 is 9693402816501.

10561820439690 is a `hidden beast` number, since 10 + 5 + 61 + 82 + 0 + 439 + 69 + 0 = 666.

It is a super-2 number, since 2×105618204396902 (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10561820439691) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5555927740 + ... + 5555929640.

It is an arithmetic number, because the mean of its divisors is an integer number (78509995200).

Almost surely, 210561820439690 is an apocalyptic number.

10561820439690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10561820439690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15073919078400).

10561820439690 is an abundant number, since it is smaller than the sum of its proper divisors (19586017717110).

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

10561820439690 is a wasteful number, since it uses less digits than its factorization.

10561820439690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 10561820439690 in words is "ten trillion, five hundred sixty-one billion, eight hundred twenty million, four hundred thirty-nine thousand, six hundred ninety".