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12550112748 = 22322323963419
BaseRepresentation
bin10111011000000101…
…11000010111101100
31012101122020210011200
423230002320113230
5201200312101443
65433200245500
7623001124665
oct135402702754
935348223150
1012550112748
115360236508
122523010890
131250114424
14870ada36c
154d6bd6dd3
hex2ec0b85ec

12550112748 has 72 divisors (see below), whose sum is σ = 33242227200. Its totient is φ = 3984679776.

The previous prime is 12550112747. The next prime is 12550112753. The reversal of 12550112748 is 84721105521.

It is a happy number.

12550112748 is a `hidden beast` number, since 1 + 25 + 501 + 127 + 4 + 8 = 666.

12550112748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×125501127482 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12550112747) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 166183 + ... + 229601.

It is an arithmetic number, because the mean of its divisors is an integer number (461697600).

Almost surely, 212550112748 is an apocalyptic number.

12550112748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12550112748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16621113600).

12550112748 is an abundant number, since it is smaller than the sum of its proper divisors (20692114452).

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

12550112748 is a wasteful number, since it uses less digits than its factorization.

12550112748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63691 (or 63686 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 12550112748 in words is "twelve billion, five hundred fifty million, one hundred twelve thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 23 36 46 69 92 138 207 239 276 414 478 717 828 956 1434 2151 2868 4302 5497 8604 10994 16491 21988 32982 49473 63419 65964 98946 126838 190257 197892 253676 380514 570771 761028 1141542 1458637 2283084 2917274 4375911 5834548 8751822 13127733 15157141 17503644 26255466 30314282 45471423 52510932 60628564 90942846 136414269 181885692 272828538 348614243 545657076 697228486 1045842729 1394456972 2091685458 3137528187 4183370916 6275056374 12550112748