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80008079999 = 1789972392281
BaseRepresentation
bin100101010000011011…
…0100110101001111111
321122111220022120200012
41022200312212221333
52302324032024444
6100431042453435
75531450313311
oct1124066465177
9248456276605
1080008079999
1130a27525771
121360a66427b
137710a03793
143c2dc7d7b1
152134067b9e
hex12a0da6a7f

80008079999 has 32 divisors (see below), whose sum is σ = 86949676800. Its totient is φ = 73347563520.

The previous prime is 80008079959. The next prime is 80008080007. The reversal of 80008079999 is 99997080008.

It is a de Polignac number, because none of the positive numbers 2k-80008079999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80008079959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35074739 + ... + 35077019.

It is an arithmetic number, because the mean of its divisors is an integer number (2717177400).

Almost surely, 280008079999 is an apocalyptic number.

80008079999 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

80008079999 is a deficient number, since it is larger than the sum of its proper divisors (6941596801).

80008079999 is a wasteful number, since it uses less digits than its factorization.

80008079999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The spelling of 80008079999 in words is "eighty billion, eight million, seventy-nine thousand, nine hundred ninety-nine".

Divisors: 1 17 89 97 239 1513 1649 2281 4063 8633 21271 23183 38777 146761 203009 221257 361607 394111 545159 2063287 3451153 3761369 9267703 19691873 35075879 48519151 52880423 334761841 824825567 898967191 4706357647 80008079999