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80765040200 = 23521331063477
BaseRepresentation
bin100101100110111111…
…0001011011001001000
321201110122200010212012
41023031332023121020
52310401322241300
6101034123035052
75556301341335
oct1131576133110
9251418603765
1080765040200
113128583a109
12137a006ba88
137801797320
143ca260398c
15217a73c435
hex12cdf8b648

80765040200 has 48 divisors (see below), whose sum is σ = 202223241780. Its totient is φ = 29820936960.

The previous prime is 80765040173. The next prime is 80765040227. The reversal of 80765040200 is 204056708.

It is an interprime number because it is at equal distance from previous prime (80765040173) and next prime (80765040227).

It can be written as a sum of positive squares in 6 ways, for example, as 27016181956 + 53748858244 = 164366^2 + 231838^2 .

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 11 ways as a sum of consecutive naturals, for example, 15529139 + ... + 15534338.

Almost surely, 280765040200 is an apocalyptic number.

It is an amenable number.

80765040200 is an abundant number, since it is smaller than the sum of its proper divisors (121458201580).

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

80765040200 is a wasteful number, since it uses less digits than its factorization.

80765040200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31063506 (or 31063497 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 80765040200 its reverse (204056708), we get a palindrome (80969096908).

The spelling of 80765040200 in words is "eighty billion, seven hundred sixty-five million, forty thousand, two hundred".

Divisors: 1 2 4 5 8 10 13 20 25 26 40 50 52 65 100 104 130 200 260 325 520 650 1300 2600 31063477 62126954 124253908 155317385 248507816 310634770 403825201 621269540 776586925 807650402 1242539080 1553173850 1615300804 2019126005 3106347700 3230601608 4038252010 6212695400 8076504020 10095630025 16153008040 20191260050 40382520100 80765040200