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12455247868 = 22732321312
BaseRepresentation
bin10111001100110001…
…11111111111111100
31012011000202011000121
423212120333333330
5201002020412433
65415531104324
7620436601000
oct134630777774
935130664017
1012455247868
115311732088
1224b72a20a4
13123657b06b
14862284700
154cd6e8c2d
hex2e663fffc

12455247868 has 108 divisors (see below), whose sum is σ = 26776481200. Its totient is φ = 5066901840.

The previous prime is 12455247781. The next prime is 12455247887. The reversal of 12455247868 is 86874255421.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 95078163 + ... + 95078293.

Almost surely, 212455247868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12455247868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13388240600).

12455247868 is an abundant number, since it is smaller than the sum of its proper divisors (14321233332).

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

12455247868 is an equidigital number, since it uses as much as digits as its factorization.

12455247868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 163 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 52.

The spelling of 12455247868 in words is "twelve billion, four hundred fifty-five million, two hundred forty-seven thousand, eight hundred sixty-eight".

Divisors: 1 2 4 7 14 23 28 46 49 92 98 131 161 196 262 322 343 524 529 644 686 917 1058 1127 1372 1834 2116 2254 3013 3668 3703 4508 6026 6419 7406 7889 12052 12838 14812 15778 17161 21091 25676 25921 31556 34322 42182 44933 51842 68644 69299 84364 89866 103684 120127 138598 147637 179732 181447 240254 277196 295274 362894 394703 480508 485093 590548 725788 789406 840889 970186 1033459 1578812 1681778 1940372 2066918 2762921 3363556 3395651 4133836 5525842 5886223 6791302 9078169 11051684 11772446 13582604 18156338 19340447 23544892 23769557 36312676 38680894 47539114 63547183 77361788 95078228 127094366 135383129 254188732 270766258 444830281 541532516 889660562 1779321124 3113811967 6227623934 12455247868