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80830909512 = 23323730341933
BaseRepresentation
bin100101101000111100…
…1011100110001001000
321201122020121122120100
41023101321130301020
52311020203101022
6101044434525400
75561031252213
oct1132171346110
9251566548510
1080830909512
1131309a39761
12137ba136860
13781231a952
143cab26c77a
1521813ee1ac
hex12d1e5cc48

80830909512 has 48 divisors (see below), whose sum is σ = 224833730940. Its totient is φ = 26215429248.

The previous prime is 80830909507. The next prime is 80830909531. The reversal of 80830909512 is 21590903808.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55203382116 + 25627527396 = 234954^2 + 160086^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15168303 + ... + 15173630.

Almost surely, 280830909512 is an apocalyptic number.

It is an amenable number.

80830909512 is an abundant number, since it is smaller than the sum of its proper divisors (144002821428).

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

80830909512 is a wasteful number, since it uses less digits than its factorization.

80830909512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30341982 (or 30341975 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 80830909512 in words is "eighty billion, eight hundred thirty million, nine hundred nine thousand, five hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 37 72 74 111 148 222 296 333 444 666 888 1332 2664 30341933 60683866 91025799 121367732 182051598 242735464 273077397 364103196 546154794 728206392 1092309588 1122651521 2184619176 2245303042 3367954563 4490606084 6735909126 8981212168 10103863689 13471818252 20207727378 26943636504 40415454756 80830909512