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12868530490530 = 23351113418129153
BaseRepresentation
bin1011101101000011000000…
…1100000100110010100010
31200120012221000102110122000
42323100300030010302202
53141314222301144110
643211415444424430
72465502116250021
oct273206014046242
950505830373560
1012868530490530
114111570a86430
12153a0109a8116
13724660508970
14326ba97128b8
15174b177ed1c0
hexbb430304ca2

12868530490530 has 256 divisors, whose sum is σ = 41298703649280. Its totient is φ = 2809434931200.

The previous prime is 12868530490477. The next prime is 12868530490667. The reversal of 12868530490530 is 3509403586821.

12868530490530 is a `hidden beast` number, since 1 + 2 + 8 + 68 + 5 + 3 + 0 + 49 + 0 + 530 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2481567 + ... + 5647586.

It is an arithmetic number, because the mean of its divisors is an integer number (161323061130).

Almost surely, 212868530490530 is an apocalyptic number.

12868530490530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12868530490530 is an abundant number, since it is smaller than the sum of its proper divisors (28430173158750).

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

12868530490530 is a wasteful number, since it uses less digits than its factorization.

12868530490530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129234 (or 8129228 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 12868530490530 in words is "twelve trillion, eight hundred sixty-eight billion, five hundred thirty million, four hundred ninety thousand, five hundred thirty".