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12489101081600 = 21052111321743359
BaseRepresentation
bin1011010110111101100001…
…1011101111110000000000
31122012221112221001101200112
42311233120123233300000
53114110134334102400
642321225215410452
72426210365424513
oct265573033576000
948187487041615
1012489101081600
113a85663a74620
12149857a823a28
136c7942844c00
14312693524d7a
15169d0bcce835
hexb5bd86efc00

12489101081600 has 1584 divisors, whose sum is σ = 39731920208640. Its totient is φ = 3843057254400.

The previous prime is 12489101081593. The next prime is 12489101081603. The reversal of 12489101081600 is 618010198421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489101081603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 34788582221 + ... + 34788582579.

It is an arithmetic number, because the mean of its divisors is an integer number (25083282960).

Almost surely, 212489101081600 is an apocalyptic number.

12489101081600 is a gapful number since it is divisible by the number (10) 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 12489101081600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19865960104320).

12489101081600 is an abundant number, since it is smaller than the sum of its proper divisors (27242819127040).

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

12489101081600 is a wasteful number, since it uses less digits than its factorization.

12489101081600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

The spelling of 12489101081600 in words is "twelve trillion, four hundred eighty-nine billion, one hundred one million, eighty-one thousand, six hundred".