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2068812400080 = 243543919635653
BaseRepresentation
bin11110000110101110110…
…101000000010111010000
321022202222002111222000110
4132012232311000113100
5232343411433300310
64222222125321320
7302316046153206
oct36065665002720
97282862458013
102068812400080
11728418736518
12294b49106240
1312011b93967a
14721b9883076
1538c34201d20
hex1e1aed405d0

2068812400080 has 80 divisors (see below), whose sum is σ = 6427927693440. Its totient is φ = 550426596864.

The previous prime is 2068812400073. The next prime is 2068812400099. The reversal of 2068812400080 is 800042188602.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 9712467 + ... + 9923186.

It is an arithmetic number, because the mean of its divisors is an integer number (80349096168).

Almost surely, 22068812400080 is an apocalyptic number.

2068812400080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2068812400080 is an abundant number, since it is smaller than the sum of its proper divisors (4359115293360).

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

2068812400080 is a wasteful number, since it uses less digits than its factorization.

2068812400080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19636108 (or 19636102 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

Adding to 2068812400080 its reverse (800042188602), we get a palindrome (2868854588682).

The spelling of 2068812400080 in words is "two trillion, sixty-eight billion, eight hundred twelve million, four hundred thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 439 878 1317 1756 2195 2634 3512 4390 5268 6585 7024 8780 10536 13170 17560 21072 26340 35120 52680 105360 19635653 39271306 58906959 78542612 98178265 117813918 157085224 196356530 235627836 294534795 314170448 392713060 471255672 589069590 785426120 942511344 1178139180 1570852240 2356278360 4712556720 8620051667 17240103334 25860155001 34480206668 43100258335 51720310002 68960413336 86200516670 103440620004 129300775005 137920826672 172401033340 206881240008 258601550010 344802066680 413762480016 517203100020 689604133360 1034406200040 2068812400080