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1081497028608 = 211355936833
BaseRepresentation
bin11111011110011100011…
…11110000100000000000
310211101112101110102200000
433233032033300200000
5120204401214403413
62144455522400000
7141064335031353
oct17571617604000
93741471412600
101081497028608
113877299727a7
12155727200000
137aca55c22a9
143a4b7d5029a
151d1eb394073
hexfbce3f0800

1081497028608 has 288 divisors, whose sum is σ = 3294241423200. Its totient is φ = 354379235328.

The previous prime is 1081497028561. The next prime is 1081497028637. The reversal of 1081497028608 is 8068207941801.

1081497028608 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 4 + 9 + 7 + 0 + 28 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29343760 + ... + 29380592.

It is an arithmetic number, because the mean of its divisors is an integer number (11438338275).

Almost surely, 21081497028608 is an apocalyptic number.

1081497028608 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 1081497028608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1647120711600).

1081497028608 is an abundant number, since it is smaller than the sum of its proper divisors (2212744394592).

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

1081497028608 is an frugal number, since it uses more digits than its factorization.

1081497028608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36929 (or 36897 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 1081497028608 in words is "one trillion, eighty-one billion, four hundred ninety-seven million, twenty-eight thousand, six hundred eight".