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8008408400000 = 275520021021
BaseRepresentation
bin111010010001001101001…
…0101101000000010000000
31001100121002202021101020112
41310202122111220002000
52022202210022300000
625011002333130452
71454405553145031
oct164423225500200
931317082241215
108008408400000
11260838a843648
12a940bb929a28
1346126092a088
141d9875296a88
15dd4b5233235
hex7489a568080

8008408400000 has 96 divisors (see below), whose sum is σ = 19941538542660. Its totient is φ = 3203363200000.

The previous prime is 8008408399967. The next prime is 8008408400039. The reversal of 8008408400000 is 48048008.

It can be written as a sum of positive squares in 6 ways, for example, as 503044073536 + 7505364326464 = 709256^2 + 2739592^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 8008408400000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9610511 + ... + 10410510.

Almost surely, 28008408400000 is an apocalyptic number.

8008408400000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8008408400000 is an abundant number, since it is smaller than the sum of its proper divisors (11933130142660).

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

8008408400000 is an frugal number, since it uses more digits than its factorization.

8008408400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20021060 (or 20021028 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The spelling of 8008408400000 in words is "eight trillion, eight billion, four hundred eight million, four hundred thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 320 400 500 625 640 800 1000 1250 1600 2000 2500 3125 3200 4000 5000 6250 8000 10000 12500 16000 20000 25000 40000 50000 80000 100000 200000 400000 20021021 40042042 80084084 100105105 160168168 200210210 320336336 400420420 500525525 640672672 800840840 1001051050 1281345344 1601681680 2002102100 2502627625 2562690688 3203363360 4004204200 5005255250 6406726720 8008408400 10010510500 12513138125 12813453440 16016816800 20021021000 25026276250 32033633600 40042042000 50052552500 62565690625 64067267200 80084084000 100105105000 125131381250 160168168000 200210210000 250262762500 320336336000 400420420000 500525525000 800840840000 1001051050000 1601681680000 2002102100000 4004204200000 8008408400000